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JPS58191947A - Inspecting device of optical fiber - Google Patents

Inspecting device of optical fiber

Info

Publication number
JPS58191947A
JPS58191947A JP7510982A JP7510982A JPS58191947A JP S58191947 A JPS58191947 A JP S58191947A JP 7510982 A JP7510982 A JP 7510982A JP 7510982 A JP7510982 A JP 7510982A JP S58191947 A JPS58191947 A JP S58191947A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber
converter
transmission loss
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7510982A
Other languages
Japanese (ja)
Inventor
Koji Fujii
幸司 藤井
Tadashi Kinomura
木野村 正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP7510982A priority Critical patent/JPS58191947A/en
Publication of JPS58191947A publication Critical patent/JPS58191947A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/33Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:To compare a transmission loss with a standardized value to inspect an optical fiber, by providing a standardized value setting function and a function, where a measured value and the standardized value are compared with each other to discriminate the measured value, besides a function where the transmission loss of the optical fiber is measured. CONSTITUTION:An inspecting device main body 5 consisting of an AD converter 6, a DA converter 7, a microcomputer (muCPU) 8, a memory 9, etc. and measuring modules 2 separated from the main body 5 are provided. A reference optical fiber 15 is connected between measuring modules, and output voltages of light receiving parts of respective measuring modules are stored in the memory 9 successively. Next, the fiber 15 is removed, and an optical fiber 1 to be inspected is connected between measuring modules, and a mode switch 12 is set to the measurement mode. Each time an input is selected, a digital input value to the DA converter 7 which corresponds to this input and is obtained by the reference optical fiber is read out from the memory 9 and is given to the AD converter 6, and the conversion required for decibel display or the like is operated in the muCPU8, and the result is displayed on a display 13.

Description

【発明の詳細な説明】 本発明は元ファイバの伝送損失を規格値と比較して検査
する装kK関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for inspecting the transmission loss of an original fiber by comparing it with a standard value.

従来の元ファイバ伝込損失副定装置に、被試験光ファイ
バの−4に元倉入カし、他端で九を受光してその損失k
 #J定するものである。そのため、7tフアイバの伝
送損失に測定できるが、当該光ファイバの伝送損失が規
格値より大II%Aか否か【検■することがてl!なか
った。このような検fr(H例えば、+7アイバを成る
長さに調べして切断し、その両端又に片jimK党コネ
クタkI11i何灯るという組立工、tIiにおいて、
当該長さの元ファイバの伝送損失が規格に満足してiる
か否か會検責したい場合がめる・ 本発明に上記従来技爾に鵬み、元ファイバの伝送損失を
規格値と比較して検査できる装置を提供すること′f:
目的とする。この目的は、元ファイバの伝送損失t C
1j定する機能に加え、規格値の設定機能と、量定櫨と
規II6wLの比軟判定機能と會lawえることにより
適数できる0以下、−面を参照して本発明を収明する。
In the conventional original fiber propagation loss sub-determination device, the −4 end of the optical fiber under test is input into the original fiber, and the other end receives the light of 9 and the loss k is calculated.
#J is determined. Therefore, it is possible to measure the transmission loss of a 7t fiber, but it is necessary to check whether the transmission loss of the optical fiber is larger than the standard value by II%A. There wasn't. For example, an assembler examines and cuts a +7 fiber to a length, and attaches one connector to both ends of the connector.
When a company wants to check whether the transmission loss of the original fiber of the length satisfies the standard, the present invention incorporates the above conventional technique and compares the transmission loss of the original fiber with the standard value. Provide testing equipment'f:
purpose. This purpose is based on the original fiber transmission loss t C
In addition to the function of determining 1j, the present invention will be described with reference to 0 or less, which can be made into an appropriate number by combining the standard value setting function, the quantitative determination scale, and the soft judgment function of Rule II6wL.

第1図a本発明の一夾一例【示す@この実施例はfa2
図の如く2本ベアの元ファ1バ1t−1〜1〜1−4と
灸数用いて組配−さn九1合のいわゆる元ファイバ・・
−ネスの検査に用い′″t4川なものである。第1図に
おいて、2は一建モジュールでるり、冗7アイバハーネ
スにおりる九ファイバlのaK応じて2−1〜2−8の
如く複数個設けらn12つのマルナフVりi#3 e 
4 を介り、て検量装置I11本体5に接続さnている
。各摺定モジュール2に元ファイバlの元コネクタla
K修絖する2回路の元コネクタ2ak4すると共に、図
示しないが、元コネクタ2aの一方の足元出力を出させ
るための1路からなる発覚部、並ひに元コネクメ2mの
他方の一路に結合する受光素子及びこの受光素子の光電
at電圧に変換する回路からなる受光部【ケース内に端
え、謝に発7を邸を一方のマルチプレクサ3に接続する
ための電気的コネクタ2b及び受光郁會他方のマルチプ
レクサ4に接続するための電気的コネクタ20を謙える
。各党ファイバ1rj216i−耐の測定モジュール間
に接続され、マルチプレク″y3.4の選択動作により
順次、一端から光音入力6nて他端で受光さnる・ 検査i*本体51;J、AD変換i6.f)A変換器7
.マイクロコンピュータ(μC)’LJ) 8 、メモ
リQ、(j4失KvATる各桓データノ設定aXO。
Figure 1 a One example of the present invention
As shown in the figure, two bare original fibers 1t-1 to 1 to 1-4 and the so-called original fibers of n91 are arranged using the moxibustion number...
In Figure 1, 2 is a single module, and 2-1 to 2-8 are used depending on the aK of 9 fibers that go into the Aiba harness. Multiple pieces are provided n12 Marnafu VI #3 e
4, it is connected to the main body 5 of the calibration device I11. The original connector la of the original fiber l is attached to each sliding module 2.
K is connected to the original connector 2ak4 of the two circuits to be repaired, and although not shown, is connected to a detection section consisting of one path for outputting the foot output of one of the original connectors 2a, as well as to the other path of the original connector 2m. A light-receiving section consisting of a light-receiving element and a circuit for converting the photoelectric voltage of this light-receiving element into a photovoltaic voltage. An electrical connector 20 for connecting to a multiplexer 4 is provided. The fibers of each party are connected between the measurement modules of 1rj216i and 216i, and by the selection operation of the multiplexer 3.4, the optical sound input 6n is received from one end and the light is received at the other end. i6.f) A converter 7
.. Microcomputer (μC)'LJ) 8, memory Q, (j4 loss KvAT) each frame data setting aXO.

M1足モ/ニールと元ファイバの組合せ情@O入カー1
1.モード切換器12及び表示器13を−える・なお、
14rLデータバスである・AD変侯a 6 rlマル
チルクサ4tブ1して人力する測定モジュール2の受光
部からのアナログ出力電比會デジタル信号に変換するか
、変換の際、基準電圧入力端子@aK与えらnるアナロ
グ電圧【フルスケールとしてデジタル変換するODA変
換器7框AD変換器6と同一ビット数であり、マイクロ
コンピュータ80制#により、−短モジュール間#IC
2本ペアの基準光ファイノ(15が接続さnた場合に侍
らnるAD変換塁6のデジタル出力をアナログ備考に&
供してllI妃の基準亀圧會供給する・基準光ファイバ
15U損失が無視できるか又は既知の標準的な亀のもの
であり、一定の校正に用いる。なお、15a[2回路の
元コネクタである。
M1 foot mo/Neil and former fiber combination information @O entry car 1
1. Change the mode switch 12 and display 13.
14rL data bus ・AD conversion a 6 rl multiluxer 4t bus 1 and analog output from the light receiving part of measurement module 2 manually converted to digital signal, or during conversion, reference voltage input terminal @aK It has the same bit number as the ODA converter 7 and the AD converter 6, which converts the analog voltage into digital as a full scale, and the microcomputer 80 system converts it into a digital signal.
When two pairs of reference optical fibers (15 are connected, the digital output of AD conversion base 6 is converted into an analog note &
A reference optical fiber 15U with negligible or known loss is provided and used for certain calibrations. Note that 15a is the original connector for two circuits.

マイクロコンピュータ8aマルテフ゛レクツ3゜4、A
D変換器6及びDA変換器7の制御並ひに、1本となる
伝送損失の算出、規格値の算出。
Microcomputer 8a Malteflects 3゜4,A
Control of the D converter 6 and DA converter 7, calculation of transmission loss for one line, and calculation of standard values.

伝送損失の規格値に釣する比較利足及び−配線の判定【
行う・マイクロコンピュータ8の演算とともに本実施例
装置の動作【説明する・(1)校正:各測定モジュール
間に基準光ファイバ15會飯絖し、モード切換器12に
校正モードに設定する。71クロフシピユ一タ8区マル
テルり+j3.4を制御して各測定モジュールの受光部
の出力電圧を順次AD変換器6に与え、このAD変換器
6のデジタル出力がフルスケールとなるよう@DA変換
器7へのデジタル入力mt’*めてこatメモリ9に順
次記憶しておく。
Comparison of transmission loss standard value and wiring judgment [
・Operation of the apparatus of this embodiment along with the calculations of the microcomputer 8 [Description ・(1) Calibration: Connect the reference optical fiber 15 between each measurement module, and set the mode switch 12 to the calibration mode. The output voltage of the light receiving section of each measurement module is sequentially applied to the AD converter 6 by controlling the 71 cross-ship unit 8 section Martel +j3.4, and @DA conversion is performed so that the digital output of this AD converter 6 becomes full scale. The digital input mt'* to the device 7 is sequentially stored in the memory 9.

(論)  伝J8損失の測定:次に基準光ファイバ15
tjAt、て被試鰐光ファイバl【各糊定モジュール関
lc接続し、モード切換器12Yr糊定モードに設定す
る。オイクロフ)σ′ヱ・−28にマルチIVり丈3.
4tllilJ御して順次AD変換gihへの人力を切
換え、各入力の選択の都度こrt c対応する基準光フ
ァイバで得九DA変喪器7へのデジタル入力IIl′に
メモリ9から読出してDA変換器7へ与えるo Cnに
より、各人力の選択の都度得られるAD変ls器6のデ
ジタル出力は、被試験ft7アイバ1c1総合伝送損失
から基準光ファイバ15の総合伝送損失を1典したもの
のバイナリ−嵌#LK一対して論理を反転させ九ものに
相当し、発光部の出力光中受光部の感度の変動の影響が
lくなる。そこで、^Df:*i@のデジタル出力上反
転させ且つデシベル表示等に必散な変114を1イクロ
コンピユータSが演算し七ノb来を表示器13に表示さ
せる。この1合、データ設定器10により基準光ファイ
バ15の総合伝送損失【入力すnばこの櫨を加算するこ
とにより被試験光7アイパlの総合伝送損失が祷らnる
。を九、轟卑党ファイバlの元コネクタに依存しない伝
送損失倉入力丁nはこの#L會加算することにより被試
験光ファイバlの元コネクタに依存しない伝送損失が得
られる0 (2)規格値に対する合否2僅試験元ファイバlの総合
伝送損失の合否t−emにとって考える@一般IIc党
ファイバの総合伝送損失TL[dBJにTL =t−t
F+1.ψ勺+tF/F + Lo/i但し、t:元フ
ァイバの擾さく隅J LF二元ファイバの単位兼当9の伝送損失しdルーLE
/u”発光部と元ファイバの結合損失[dBJLb7h
・:光ファイバ閣コネクタの結合損失(dBJLo/E
:光7アイパと受jt都の結合損失(dBJで4えらn
る。そこでモード切換1f!12を規格モードに設定し
、設定器10により一1t、7アイバの単位長さ当りの
伝送損失LP −fiファイバの長さ21元コネクタの
種!1!1(これによりLE/(J −LF/F及びL
O/Wが決まる。)、光7アイバ間コネクタの有tI#
並びに軒容娯差tマイクロコンヒュータ8に入力すると
、こわらのデータに基ついてマイクロコンピュータ8に
各被試験光ファイバl−1〜1−4に対する規格會算出
し、規格と被試験光ファイバの総合伝送損失の−j定値
とを比較して合否を判定し、表が滲13に舶来を表示す
る。
(Theory) Measurement of propagation J8 loss: Next, reference optical fiber 15
tjAt, connect the optical fiber under test to each gluing module, and set the mode switch 12Yr to gluing mode. Oiklov) σ′ヱ・-28 multi-IV length 3.
4tllilJ to sequentially switch the manual power to AD conversion gih, and each time each input is selected, the corresponding reference optical fiber is read out from memory 9 to digital input IIl' to DA transformer 7, and DA conversion is performed. The digital output of the AD converter 6 obtained each time the selection is made is the binary output of the total transmission loss of the reference optical fiber 15 obtained by subtracting the total transmission loss of the reference optical fiber 15 from the total transmission loss of the FT7 IVER 1C1 under test. The logic is reversed with respect to #LK, and the influence of the sensitivity fluctuation of the light receiving section on the output light of the light emitting section is reduced to 1. Therefore, the digital output of ^Df:*i@ is inverted, and the 1 microcomputer S calculates a change 114 that is necessary for displaying decibels, etc., and displays the 7th b value on the display 13. In this case, the data setter 10 calculates the total transmission loss of the reference optical fiber 15 by adding the total transmission loss of the input signal. 9. The transmission loss that does not depend on the original connector of the optical fiber l is 0. By adding this #L, the transmission loss that does not depend on the original connector of the optical fiber under test l can be obtained. (2) Standard Pass/fail for the value 2 Pass/Fail of the total transmission loss of the test source fiber t-em @Total transmission loss of the general IIc fiber TL [TL in dBJ = t-t
F+1. ψ + tF/F + Lo/i However, t: The cutting corner of the original fiber J LF The transmission loss of the unit of the binary fiber
/u” Coupling loss between light emitting part and original fiber [dBJLb7h
・:Coupling loss of optical fiber connector (dBJLo/E
: Coupling loss between optical 7 AIPA and receiver (4 EL in dBJ)
Ru. Then mode switch 1f! 12 to the standard mode, and set the setting device 10 to -1t, transmission loss per unit length of 7 fibers LP-fi fiber length 21 original connector type! 1!1 (This makes LE/(J - LF/F and L
O/W is decided. ), tI# of optical 7-eye connector
Then, based on the stiffness data, the microcomputer 8 calculates the specifications for each of the optical fibers to be tested l-1 to 1-4, and calculates the specifications and the optical fibers to be tested. Pass/fail is determined by comparing the total transmission loss with -j constant value of the total transmission loss, and the table shows the import in 13.

←) 誤配−の検査二組配−の場合は各元ファイバの入
出力が対応してφなければならない◎そこで七−ド切侯
器12に誤配量検査モードに設定し、入力器11[より
どの党ファイバj がどの画定モジエールKi続さnて
iるかという情報tマイクロコンピュータ8に入力する
。実際の配置mが入力情報と真っていれは伝送損失の固
定1fia本米のものと大1mK真なるOて、−f(ク
ロコンピユータ8rX@m(liから一配線の有燕會検
出でき、またマルテグレク′I#″3.4の選択tずら
ずことによりどCような誤配4@IKなっているかが判
り、Cの結釆會表不器13に表示させるQ #!3図に他の爽m例を示す・この爽抛例a単芯尤ファ
イバ16の検査用であり、611J kモジュール扛発
光用のもの17と受光用のもの18とに分かn″trる
。更に、検査装置本体rULIA変換器を使用せず、l
たAD変換器19かフルスケール固定のものとなってお
り、一定の慄止は単芯の基準光ファイバ20かi11枕
芒rした場合と率芯の被試験光7アイバ16が接続され
た場合それぞnで得らnるALj変換器19のデジタル
出力の差音マイクロコンピュータ8がIX算することに
より杓わn%発元部の出力jt、f受尤廊の感度が変動
しても固定に誤差が生じなくなる。
←) Inspection of incorrect placement In the case of two sets of connections, the input and output of each original fiber must correspond to φ. Therefore, the seventh-edge cutter 12 is set to the incorrect placement inspection mode, and the input device 11 [Information about which fiber j is connected to which defining module Ki is entered into the microcomputer 8. If the actual arrangement m is the input information, then the fixed transmission loss is 1fiA, and the true value is 1mK. By shifting the selection of Martegrek'I#''3.4, we can see what kind of C misplacement is 4@IK, and we can display the resultant table of C in Q#!3 diagram. This example is for testing a single-core fiber 16, and is divided into a 611J k module for light emission 17 and light reception 18.Furthermore, an inspection device is used. Main unit r Without using ULIA converter, l
The AD converter 19 is fixed at full scale, and certain fluctuations occur when the single-core reference optical fiber 20 or i11 is connected, and when the standard-core test light 7 fiber 16 is connected. The microcomputer 8 calculates the difference of the digital output of the ALj converter 19 obtained by n, respectively, so that the outputs jt and f of the source section are fixed even if the sensitivity of the receiving section fluctuates by n%. Errors will no longer occur.

マイクロコンピュータ8【にじめ他の各部の機能a第1
図の例と同じであり、説明を省く・なお、16 a 2
 i 7 a @ l 8 a及び20JIC元コネク
タ、17bと18brX電気的コネクタである・ ここでイ4ざするに1醐定モジュール2.17゜18a
株食装瞳専柑に作った鴫の0他、光通信などrc使用す
る送信モジュール、受信モジュール、込受伯モジュール
ta用しても良い。また、検食鉄1本体μモード切換器
121用いず、自動的icモードが切値ったり、あるい
aマルテルクナの選択の@廣必Ii!な七−ドの動作を
全て行う栴敗であっても良φ・史に、崗定量ジュールを
一組だ&j南える場合U−配豊の検査(中間がか〃)る
が、本発明の目的に一応達成できる。
Microcomputer 8 [Functions of other parts a 1st]
It is the same as the example in the figure, and the explanation is omitted. Note that 16 a 2
i 7 a @ l 8 a and 20 JIC original connectors, 17b and 18brX electrical connectors・Here I 4 to 1 fixed module 2.17° 18a
In addition to the Shizuno 0 made for the Hitomi Senkan, it may also be used for transmitting modules, receiving modules, and receiving modules for RC such as optical communications. In addition, without using the μ mode switch 121 on the main body of the inspection iron 1, the IC mode automatically switches to the lowest value, or the selection of a martel kuna @Hiroshi Ii! Even if you perform all the actions of the seventh mode, if you use a set of fixed joules, you will need to perform a U-distribution test (the middle one), but the present invention The purpose can be achieved.

11!−KVた上記の実施例では各元ファイ/(が両端
に元コネクタに瘤えているが、片端にだけ覚コネクタf
ニーえる元ファイバ1も検査で龜ることuNつまでもな
い。なお、このと@jtコネタタカ無い元ファイバの片
@VCに、アダプタ【取付ける必畳が生じる。
11! -KV In the above embodiment, each original phi/( is protruded into the original connector at both ends, but only one end has a stent connector f.
There is no need for the original fiber 1 to be delayed during inspection. In addition, in this case, it is necessary to attach an adapter to the original fiber part @VC that does not have a @jt connector.

以上Wi明したように本発明によnば、被賦−元ファイ
バの伝送損失が規格を満足するか否かt簡単に検査でき
る。また、測定モジュールと検査装置本体とが着脱司能
なので、使用光源の波長や元5、コネクタの形が14な
る櫨々の元フブイバに対し1も画定モジュールに父換す
るだけで容易に@食できる。史ゼζ、測建モジュールと
6接続をマルチプレクサで切換えるので、元ファイバハ
ーネスの一配1Mk検査で!!る◎
As described above, according to the present invention, it is possible to easily test whether the transmission loss of the source fiber satisfies the specifications. In addition, since the measurement module and the inspection device main body can be attached and detached, it is easy to change the wavelength of the light source used and the shape of the connector to 14 by simply replacing it with the standard module. can. History Zezeζ, since the measurement and construction module and 6 connections are switched with a multiplexer, one Mk inspection of the original fiber harness can be done! ! ◎

【図面の簡単な説明】[Brief explanation of the drawing]

811図及びag319a本発切の各夾厖911倉が丁
傳成−1絽21WI!元ファイバハーネスの一例會示す
W&図でるる〇 融 圓 中、 lと16区n賦績元ファイバ、 15と20μ基準元ファイバ、 2.17及び18ra#lJ矩モ/ニール、la@2a
s15a、1Maa五7j。 18ai及び20aa元コネクタ、 zb、2c、17b及び18b框電気的コネクタ、 3と4はマルチプレクサ、 5a検J1装置本体、 6と19r[AD[fi器、 6aμ基準電圧の入力電子、 7はIJA叢候器、 8μ71クロコンピユータ 9rLメモリ、 100:損失に関する各禎データの設定器、1htra
J定モジユールと元7アイパの組合ぜ情報の入力器、 121ユモード切換器、 1arx衣示器、 14μデータ・バスである。 %rt出願人 住友電気工業株式会社 代   理   人 升埋士 光 石 士 部 (& 1 & N
811 figure and ag319a book release 911 storehouses are Dingdencheng-1 21WI! An example of the original fiber harness is shown in the W&D figure. L and 16 section n source fiber, 15 and 20μ reference source fiber, 2.17 and 18ra#lJ rectangular mo/neal, la@2a
s15a, 1 Maa 57j. 18ai and 20aa original connectors, zb, 2c, 17b and 18b frame electrical connectors, 3 and 4 are multiplexers, 5a inspection J1 device body, 6 and 19r [AD[fi device, 6aμ reference voltage input electronics, 7 is IJA complex 8μ71 black computer 9rL memory, 100: Setting device for each loss related data, 1htra
It is an input device for combination information of J constant module and original 7 AIPA, 121 mode switch, 1arx display device, and 14μ data bus. %rtApplicant Sumitomo Electric Industries Co., Ltd.Representative Hitoshi Hitsujishi Department (& 1 & N

Claims (1)

【特許請求の範囲】 被試験光ファイバに対応する入出力の光コネクタ、出力
の元コネクタに結合する電気−光変換ii5.入力の光
コネクタ[k3合する元−電気変*部及び電気信号の接
続St−え検査装置本体と框分離した測定モジュールと
、測定モジュールの入出力コネクタ間に接続さnる基準
元ファイバと、前記測定モジュールの接続tki5に盾
脱する接続部、II!ll定モジュールとの接続1に一
気的に切換えるマルチプレクサ、マルチ1vl’Uk経
て測定モジュールの党−電気変換部から与えられる電気
信号をデジタル信号に変換するAD変換器。被試験光フ
ァイバの規格作成に必散なデータ倉入力するための設定
器及びこの設定器からのデータに基づいて各試験光ファ
イバの伝送損失の規格値【算出すると共K 611定モ
ジユールに4準尤フアイバが接続さnた場合と被試験光
ブIイバが接続さ7した場合とでそnぞれ得らnる^D
t洪器の出力KMづ11被試験党ファイバの諷送損失【
算出し且つこの伝送損失が該当する規格値を満足する力
・否がt利足する制御波Jl!妓縦【鍋えた検査装置本
体とからなる元ファイバ @食装皺。
[Scope of Claims] Input/output optical connector corresponding to the optical fiber under test, electrical-to-optical conversion coupled to the original output connector ii5. Input optical connector [k3 connection source for electrical transformer and electrical signal St-e measurement module separated from the main body of the inspection device by a frame, reference source fiber connected between the input and output connectors of the measurement module, Connection to the connection tki5 of said measurement module, II! An AD converter that converts an electrical signal given from the electrical converter of the measurement module into a digital signal through a multiplexer that switches to connection 1 with the constant module, and a multi-channel 1vl'Uk. A setting device for inputting the data necessary for creating standards for the optical fiber under test, and a standard value of transmission loss for each test optical fiber based on the data from this setting device. The results are obtained when the fiber is connected and when the optical fiber under test is connected, respectively.
Output KM 11 Transfer loss of tested fiber [
The control wave Jl which is calculated and whose transmission loss satisfies the applicable standard value is t! The original fiber consists of the main body of the inspection device.
JP7510982A 1982-05-07 1982-05-07 Inspecting device of optical fiber Pending JPS58191947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7510982A JPS58191947A (en) 1982-05-07 1982-05-07 Inspecting device of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7510982A JPS58191947A (en) 1982-05-07 1982-05-07 Inspecting device of optical fiber

Publications (1)

Publication Number Publication Date
JPS58191947A true JPS58191947A (en) 1983-11-09

Family

ID=13566672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7510982A Pending JPS58191947A (en) 1982-05-07 1982-05-07 Inspecting device of optical fiber

Country Status (1)

Country Link
JP (1) JPS58191947A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179183A2 (en) * 1984-10-25 1986-04-30 Sumitomo Electric Industries Limited Optical fiber characteristic measuring method and apparatus
JPS63241329A (en) * 1987-03-28 1988-10-06 Furukawa Electric Co Ltd:The Characteristic measurement of optical fiber cable with optical connector
US4990770A (en) * 1987-10-20 1991-02-05 U.S. Philips Corp. Measuring arrangement for testing a plurality of light waveguides
WO2019230720A1 (en) * 2018-05-29 2019-12-05 住友電気工業株式会社 Method for measuring transmission loss of optical fiber, and otdr measurement device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179183A2 (en) * 1984-10-25 1986-04-30 Sumitomo Electric Industries Limited Optical fiber characteristic measuring method and apparatus
JPS63241329A (en) * 1987-03-28 1988-10-06 Furukawa Electric Co Ltd:The Characteristic measurement of optical fiber cable with optical connector
JP2650905B2 (en) * 1987-03-28 1997-09-10 古河電気工業株式会社 Method for measuring characteristics of optical fiber cable with optical connector
US4990770A (en) * 1987-10-20 1991-02-05 U.S. Philips Corp. Measuring arrangement for testing a plurality of light waveguides
WO2019230720A1 (en) * 2018-05-29 2019-12-05 住友電気工業株式会社 Method for measuring transmission loss of optical fiber, and otdr measurement device
JPWO2019230720A1 (en) * 2018-05-29 2021-07-08 住友電気工業株式会社 Optical fiber transmission loss measurement method and OTDR measurement device
US11342989B2 (en) 2018-05-29 2022-05-24 Sumitomo Electric Industries, Ltd. Method for measuring transmission loss of optical fiber and OTDR measurement device

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