CN202696612U

CN202696612U - 40 G CFP (computer form printer) optical module using integrated photoelectric detector

Info

Publication number: CN202696612U
Application number: CN 201220266171
Authority: CN
Inventors: 张武平; 余向红; 陈晋敏; 熊青松
Original assignee: Wuhan Telecommunication Devices Co Ltd
Current assignee: Wuhan Telecommunication Devices Co Ltd
Priority date: 2012-06-07
Filing date: 2012-06-07
Publication date: 2013-01-23
Anticipated expiration: 2022-06-07

Abstract

The utility model discloses a 40 G CFP (computer form printer) optical module using an integrated photoelectric detector. The 40 G CFP optical module comprises an optical receiving unit, a 148pin PCB (printed circuit board) connector, a power supply circuit, an MDIO (management data interface) management interface unit, an optical emission unit and an optical multiplexer; optical demultiplexing equipment is integrated in the optical receiving unit and converts a received optical signal into four 10 G electric signals; the power supply circuit is connected with the 148pin PCB connector and supplies a power supply for the whole CFP module; the optical emission unit and the optical receiving unit provide a monitoring signal for the MDIO management interface unit; the MDIO management interface unit provides a control signal for the optical receiving unit and the optical emission unit; the optical emission unit converts the four 10 G electric signals into the optical signals; and the optical multiplexer multiplexes four optical signals with different wavelengths in one optical fiber to transmit the optical signals. By adopting the 40 G CFP optical module, the integration level can be effectively improved, and the area of a receiving assembly can be reduced.

Description

A kind of 40G CFP optical module that uses integrated photodetector

Technical field

The utility model relates to the optical module designing technique, relates in particular to a kind of 40G CFP optical module that uses integrated photodetector.

Background technology

Along with the large-scale application of wavelength-division multiplex technique on long distance line, and the broadband technology of user access networks is day by day universal, network as bridge joint egress user and long distance line net---the development of metropolitan area network relatively lags behind, and becomes gradually the bottleneck of optical-fiber network capacity and development.Current, the data service take IP as representative develop rapidly and cry that 3G disposes grows to even greater heights, all to the metropolitan area network more requirement of high power capacity and function that proposes to know clearly.

For above-mentioned this situation, IEEE formally proposed 40G/100G Fast Ethernet standard IEEE 802.3ba on June 17th, 2010.40G CFP satisfies the client optical module of this standard just, yet CFP MSA has made strict regulations to the volume of module, length * wide * height is 144.75mm * 82mm * 14mm, rational deployment is most important in so limited space, this just requires the less printed circuit board (PCB) of design area (PCB), and at present 40G CFP major part all comprises following essential part: four discrete lasers, four discrete detectors, relevant drive circuit, control circuit and two photodissociation/multiplexers.At the little a large amount of components and parts of spatial distribution like this, bring very large difficulty will for actual assembling and circuit design, and the electrical performance characteristics of high speed signal also is difficult to be guaranteed preferably.

Summary of the invention

In view of this, main purpose of the present utility model is to provide a kind of 40G CFP optical module that uses integrated photodetector, receiving terminal at 40G CFP optical module adopts integrated photodetector, because integrated photodetector is integrated together demodulation multiplexer, four PIN diode detectors and four transimpedance amplifiers (TIA), to improve integrated level and the area that dwindles receiving unit, for the transmitter unit in the module and control unit have stayed more sufficient wiring space, can effectively reduce wiring difficulty and production cost.

For achieving the above object, the technical solution of the utility model is achieved in that

A kind of 40G CFP optical module that uses integrated photodetector mainly comprises light receiving unit, 148pin PCB connector, power supply circuits, MDIO management interface unit, Optical Transmit Unit, optical multiplexer; Wherein:

Integrated Light demultiplexing equipment in the described light receiving unit is converted into 4 road 10G signals of telecommunication with the light signal of receiving; Described power supply circuits link to each other with described 148pin PCB connector, and provide power supply for whole CFP module; Described Optical Transmit Unit, light receiving unit offer the MDIO management interface unit with pilot signal; Described MDIO management interface unit offers light receiving unit and Optical Transmit Unit with control signal; Described Optical Transmit Unit is converted into light signal with 4 road 10G signals of telecommunication, and optical multiplexer transmits this 4 road different wave length signal multiplexing in an optical fiber.

Wherein: described 148pin PCB connector links to each other with other communication equipments, finishes communicating by letter between CFP MDIO management interface and 40G signal of communication and the communication system.

Described light receiving unit has adopted the photodetector assembly of light wave decomposition multiplex device integrated.

Described photodetector assembly adopts novel slab guide PLC integrated optoelectronic device.

This CFP optical module is integrated into a device with optical demultiplexer and four detector arrays.

The 40G CFP optical module of use integrated photodetector provided by the utility model has the following advantages:

This CFP optical module utilizes the integrated electro technology that optical demultiplexer and four detector arrays are integrated into a device, greatly reduced the area of receiving unit at the inner shared circuit board of CFP optical module, and because light receiving unit light path integrated level is high, reduced the insertion power consumption of detector assembly, reduce the receiving area of external electromagnetic interference, improved the quality that receives the signal of telecommunication.The simultaneously optical module development for the 40G chip rate of more miniaturization provides foundation.

Description of drawings

Fig. 1 is the 40G CFP optical module structure block diagram of the utility model integrated photodetector;

Fig. 2 is the functional structure chart of 40G CFP optical module receiving unit of the present utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment of the present utility model the 40G CFP optical module of this novel use integrated photodetector is described in further detail.

Fig. 1 is the 40G CFP optical module structure block diagram of the utility model integrated photodetector, as shown in Figure 1, this optical module mainly comprises optical multiplexer 1, Optical Transmit Unit 2, light receiving unit 6, MDIO management interface unit 3, power supply circuits 5,148pin PCB connector 4.Wherein:

Power supply circuits 5 link to each other with described 148pin PCB connector 4, for whole CFP module provides power supply; Optical Transmit Unit 2, light receiving unit 6 offer MDIO management interface unit 3 with pilot signal, and MDIO administrative unit 3 offers light receiving unit 6, Optical Transmit Unit 2 with control signal; Described Optical Transmit Unit 2 is converted into light signal with 4 road 10G signals of telecommunication, optical multiplexer 1 is propagated 4 road different wave length signal multiplexings in an optical fiber, Integrated Light demultiplexing equipment in the light receiving unit 6, the light signal of receiving is converted into 4 road 10G signals of telecommunication, 148pinpcB connector 4 links to each other with communication equipment, finishes communicating by letter of CFP MDIO management interface and 40G signal of communication and communication system.

This module light receiving unit has adopted the photodetector assembly of light wave decomposition multiplex device integrated, this assembly adopts novel PLC integrated optoelectronic device (PLC optoelectronic integrated technology), reduced the wiring area of CFP inside modules circuit board, and because light receiving unit light path integrated level is high, reduced the power consumption of detector assembly, reduce the receiving area of external electromagnetic interference, improved the quality that receives the signal of telecommunication.The simultaneously optical module development for the 40G chip rate of more miniaturization provides foundation.

Fig. 2 is the functional structure chart of 40G CFP optical module receiving unit of the present utility model, as shown in Figure 2, the light receiving unit 6 of this optical module has adopted the photodetector assembly (as shown in Figure 2) of light wave decomposition multiplex device integrated, the Wave decomposing multiplexer of this assembly adopts novel slab guide (PLC) optoelectronic integrated technology, light wave can produce diffraction effect by the waveguide array of bending, the different wave length incident light is distributed in the different waveguides, thereby realizes the function of optical splitter.Then the PIN+TIA detector through four different wave lengths receives and the amplification output electrical signals, thereby finishes photoelectric converting function.As seen, this utility model utilizes the integrated electro technology that optical demultiplexer and four detector arrays are integrated into a device, has greatly reduced the area of receiving unit at the shared circuit board of CFP inside modules.

The above is preferred embodiment of the present utility model only, is not to limit protection range of the present utility model.

Claims

1. a 40G CFP optical module that uses integrated photodetector is characterized in that, mainly comprises light receiving unit, 148pin PCB connector, power supply circuits, MDIO management interface unit, Optical Transmit Unit, optical multiplexer; Wherein:

2. the 40G CFP optical module of use integrated photodetector according to claim 1, it is characterized in that, described 148pin PCB connector links to each other with other communication equipments, finishes communicating by letter between CFP MDIO management interface and 40G signal of communication and the communication system.

3. the 40G CFP optical module of use integrated photodetector according to claim 1 is characterized in that, described light receiving unit has adopted the photodetector assembly of light wave decomposition multiplex device integrated.

4. the 40G CFP optical module of use integrated photodetector according to claim 3 is characterized in that, described photodetector assembly adopts novel slab guide PLC integrated optoelectronic device.

5. according to claim 1, the 40G CFP optical module of 3 or 4 described use integrated photodetectors, it is characterized in that this CFP optical module is integrated into a device with optical demultiplexer and four detector arrays.