CN104348553A - Cfp optical transceiver module - Google Patents
Cfp optical transceiver module Download PDFInfo
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- CN104348553A CN104348553A CN201310329676.0A CN201310329676A CN104348553A CN 104348553 A CN104348553 A CN 104348553A CN 201310329676 A CN201310329676 A CN 201310329676A CN 104348553 A CN104348553 A CN 104348553A
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Abstract
The invention discloses a CFP optical transceiver module comprising an optical transmitting unit, an optical receiving unit, a control unit, a digital diagnosis unit, a power supply unit, an optical interface unit, and an electrical interface unit. Multiple optical transmitting assemblies convert electric signals into optical signals and output the optical signals to an optical wavelength division multiplexer. The optical signals are combined into one optical signal to be transmitted to an optical network system via an optical isolator. Multiple optical receiving assemblies convert received optical signals into electric signals. The electric signals are amplified by transimpedance and then are converted into voltage signals. The voltage signals are transmitted to an amplitude-limiting amplifying circuit and a data clock restoring circuit. Then, the voltage signals are subjected to data clock sampling and are transmitted to the electrical interface to be outputted. The CFP optical transceiver module performs wave combination and wave splitting by means of an optical integration scheme and reduces complexity in fiber wrapping and fusion welding. One optical isolator is used after the transmitted light passes through the optical wavelength division multiplexer such that the antireflection requirements of all channels are achieved. Thus, multiple discrete optical isolators in the optical transmitting assemblies are eliminated, the complexity of the optical path and the structure of the CFP optical transceiver module is greatly simplified, and product cost is reduced.
Description
Technical field
The present invention relates to optical communication field, particularly relate to a kind of CFP optical transceiver module.
Background technology
Data center and commercial network service provider are accelerating the connection and the transmission that adopt 40G/100G, to meet multiple business, as the frequency range increased requirement of the explosion type that video, game, point-to-point (P2P) and social networks on line etc. promote.At present, 40G/100G CFP optical transceiver module is adopted widely and is disposed, for the transmission of higher frequency range provides the most efficient solution.40G/100G CFP optical transceiver module will meet data communication and carrier class network to ultra high bandwidth requirement, can be applicable in the transmission equipment between the backhaul to data center of long distance, as router, switch and optical transmission device etc.During the memory body of himself and digital diagnosis function are allowed to condition at optical fiber communication high speed development, obtain large batch of application.
40G CFP optical transceiver module is ultrahigh speed small-sized encapsulated parallel optical module of new generation, four road 10Gbps speed are provided to be total to the transmission rate of 40Gbps, namely 40,000 million is per second, standard single-mode fiber can transfer to 10km distance, this module utilizes parallel light device couples technology to be encapsulated in single transceiving integrated module by 4 traditional tunnel 10,000,000,000 single-links merging, while the low-power consumption of maintenance small package, extend transmission bandwidth greatly, be the nucleus module in high-speed optical transmission equipment of future generation.If the 25Gbps that the transmission rate on every road improves, then CFP optical transceiver module can provide the transmission rate of 100Gbps.
CFP encapsulation supports single mode and multimode fiber simultaneously, adapts to all kinds of speed, agreement and linkage length, comprises relevant (PMD) interface of all physical medium completed in IEEE 802.3ba working group.For 40GbE, target light interface comprises the 40Gbase-LR4 of 100 meters 40Gbase-SR4 and 10 kilometer; 100GbE then has three kinds of PMD interfaces, the 100Gbase-SR10 of 100 meters, the 100Gbase-ER4 of 100Gbase-LR4 and 40 kilometer of 10 kilometers.
40Gb/s CFP optical transceiver module supports hot plug, will meet data communication and carrier class network to ultra high bandwidth requirement, can be applicable to long apart from the transmission equipment between backhaul to data center, as router, switch and optical transmission device etc.40Gbit/s system more effectively can use transmission band, and spectrum efficiency is higher; When the cost of 40Gbit/s system drops to less than 2.5 times of 10Gbit/s system cost, just can realize extensive commercialization, thus reduce transmission cost; 1 network element replaces 4 network elements, can reduce OAM cost, complexity and spare part quantity; Can effectively reduce IP number of links, improve the autgmentability of node, improve efficiency and the function of core net.
But, in existing 40Gb/s CFP optical transceiver module, too many for the element realizing closing ripple and point wave energy, a large amount of use wavelength division multiplexing (WDM) device makes the cost of module higher, in addition, also bring optical fiber around complexity that is fine and fused fiber splice, be unfavorable for producing.In addition, for meeting the requirement of light signal antireflection, closing between ripple element at each light emission component and system and all optical isolator being installed, causing module complexity and cost all higher, necessary this to be improved.
Summary of the invention
The present invention, in order to overcome above deficiency, proposes a kind of CFP optical transceiver module.
Technical problem of the present invention is solved by following technical scheme:
A kind of CFP optical transceiver module, comprise Optical Transmit Unit, light receiving unit, control unit, digital diagnosis unit, power supply unit, UFIU UMSC Fiber Interface Unit and electric interface unit, control unit and Optical Transmit Unit, light receiving unit, electric interface unit connects, described digital diagnosis unit is connected with electric interface unit, there is provided digital diagnosis signal to telecommunication device, described Optical Transmit Unit comprises organizes light emission component more, organize laser drive unit more, data clock recovery unit, light wavelength division multiplexing and optical isolator, many groups laser drive unit and data clock recovery circuit receive the multi-channel electric signal of electric interface unit input, carry out modulation and amplify process, carry out data clock sampling and caching process simultaneously, the signal of telecommunication is sent into and organizes light emission component more, each light emission component converts the signal of telecommunication of input to light signal and outputs to light wavelength division multiplexing, after light wavelength division multiplexing, synthesize a road light signal be transferred to optical network system through optical isolator, described light receiving unit comprises light Wave decomposing multiplexer, organize optical fiber receive module more, organize photo-detector more, many groups amplitude limiting amplifier circuit and data clock recovery circuit, received optical signal is divided into multipath light signal by light Wave decomposing multiplexer, transfer to respectively and organize optical fiber receive module more, often organize optical fiber receive module and the light signal of reception is converted into the signal of telecommunication, the signal of telecommunication is converted into voltage signal and passes to amplitude limiting amplifier circuit and data clock recovery circuit after amplifying across resistance, carry out data clock sampling and caching process, signal after process is sent to electric interface unit and exports.
In one embodiment of the invention, described many group light emission components are four groups, described many group laser drive unit are four groups, described many group optical fiber receive modules are four groups, described many group photo-detectors are four groups, described many group amplitude limiting amplifier circuits are four groups, described multi-channel electric signal is four tunnels, and described multipath light signal is four tunnels.
In one embodiment of the invention, described many group light emission components are ten groups, described many group laser drive unit are ten groups, described many group optical fiber receive modules are ten groups, described many group photo-detectors are ten groups, described many group amplitude limiting amplifier circuits are ten groups, described multi-channel electric signal is ten tunnels, and described multipath light signal is ten tunnels.
In one embodiment of the invention, described Optical Transmit Unit also comprises preemphasis circuit, carries out preemphasis process to the signal of telecommunication, and described light receiving unit also comprises equalizer, carries out equilibrium treatment to the signal of telecommunication.
In one embodiment of the invention, described light emission component adopts directly modulation laser array, and laser array meets Coarse Wavelength Division Multiplexing wavelength interval.
In one embodiment of the invention, described optical fiber receive module adopts PIN type photodetector array, and detector array meets Coarse Wavelength Division Multiplexing wavelength interval.
In one embodiment of the invention, described digital diagnosis unit comprises logic control and interface circuit, A/D converter and D/A converter, logic control and interface circuit acquisition and processing module data, and monitor, the internal storage memory module information of logic control and interface circuit and user profile.
The general way that traditional CFP optical transceiver module realizes closing ripple and point wave energy is use eight WDM, occupies very large space like this, has to reduce PCB board space, all have a great impact circuit design and heat radiation, electromagnetic interference.The simultaneously mutual welding of multiple WDM, is unfavorable for the process that light reflects also very well, and increases optical path loss.We adopt light Integrated Solution to carry out conjunction ripple and partial wave, will be realized the utilizing emitted light signal syntheses one road light signal of multichannel (as four roads or ten tunnels) Coarse Wavelength Division Multiplexing by a light wavelength division multiplexing.By a light Wave decomposing multiplexer, one road light signal is divided into the light signal of four tunnel Coarse Wavelength Division Multiplexing simultaneously.This scheme greatly reduces WDM quantity, reduces product cost, decreases optical fiber around complexity that is fine and fused fiber splice, optimizes Product Process, make production more convenient.
Reduce return loss measure on, the present invention by utilizing emitted light carrier wave after light wavelength division multiplexing by use optical isolator, realize the light signal antireflection requirement of all passages.By the optical design to ballistic device inside, this scheme can meet performance index requirement.All optical isolator can not be with in many group light emission components of the present invention, thus the optical isolator of the multiple separation generally used in Optical Transmit Unit part is deducted, three optical isolators are saved for four road CFP optical transceiver modules, nine optical isolators are then saved for ten road CFP optical transceiver modules, enormously simplify the complexity of CFP optical transceiver module light path and structure, improve the reliability of CFP optical transceiver module simultaneously, and provide cost savings.
CFP optical transceiver module integrated level of the present invention is high, stable performance, and possesses higher reliability.Inside modules is integrated with clock data recovery circuit, has good high frequency debounce characteristic, is conducive to the recovery of synchrodata clock data in transport process.CFP optical transceiver module of the present invention is also integrated with preemphasis and equalization function, is conducive to the front end response improving module, thus increases bandwidth.Light emission component (202) can use common directly modulation laser array, realizes long range propagation, significantly reduces the cost of product.In addition, light receiving unit adopts avalanche photodide type detector array, highly sensitive, is also conducive to the long range propagation of signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the CFP optical transceiver module of embodiments of the invention one.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further details below by concrete execution mode.
Embodiment one:
A kind of CFP optical transceiver module, comprise Optical Transmit Unit (1), light receiving unit (2), control unit (3), digital diagnosis unit (4), power supply unit, UFIU UMSC Fiber Interface Unit (5) and electric interface unit (6), control unit and Optical Transmit Unit, light receiving unit, electric interface unit connects, described digital diagnosis unit is connected with electric interface unit, there is provided digital diagnosis signal to telecommunication device, described Optical Transmit Unit (2) comprises four groups of light emission components (TOSA), four groups of laser drive unit (LD, Laser Driver), preemphasis circuit, data clock recovery unit (CDR), light wavelength division multiplexing (PLC MUX) and optical isolator (Isolator), four groups of laser drive unit (LD) and data clock recovery circuit (CDR) receive the four road signals of telecommunication that electric interface unit (5) inputs, carry out modulation to amplify and preemphasis process, carry out data clock sampling and caching process simultaneously, the signal of telecommunication is sent into four groups of light emission components (TOSA), the signal of telecommunication of input is converted to light signal and outputs to light wavelength division multiplexing (PLC MUX) by each light emission component, optical network system is transferred to synthesis one road light signal through optical isolator after light wavelength division multiplexing, described light receiving unit (2) comprises light Wave decomposing multiplexer (PLC DEMUX), four groups of optical fiber receive modules (ROSA), four groups of amplitude limiting amplifier circuit (LA, Limiting Amplifier), equalizing circuit and data clock recovery circuit (CDR), received optical signal is divided into four road light signals by light Wave decomposing multiplexer (PLC DEMUX), transfer to four groups of optical fiber receive modules (ROSA) respectively, often organize optical fiber receive module and the light signal of reception is converted into the signal of telecommunication, the signal of telecommunication is converted into voltage signal and passes to amplitude limiting amplifier circuit (LA) and equalizing circuit after amplifying across resistance, data clock recovery circuit (CDR), carry out data clock sampling and equilibrium, caching process, signal after process is sent to electric interface unit and exports.
The light emission component (TOSA) of the present embodiment adopts directly modulation laser array, and laser array meets the Coarse Wavelength Division Multiplexing wavelength interval that IEEE 802.3ba specifies, its centre wavelength is respectively: 1271 nm, 1291 nm, 1311 nm and 1331 nm.The optical fiber receive module (ROSA) of the present embodiment adopts avalanche photodide type detector array, detector array meets the Coarse Wavelength Division Multiplexing wavelength interval that IEEE 802.3ba specifies, its centre wavelength is respectively: 1271 nm, 1291 nm, 1311 nm and 1331 nm.
The digital diagnosis unit (DDM) of the present embodiment comprises logic control and interface circuit, A/D converter and D/A converter, logic control and interface circuit acquisition and processing module data, and monitor, the internal storage memory module information of logic control and interface circuit and user profile.
Power supply unit comprises power-supply controller of electric, controls the open and close of each functional unit; Described electric interface unit is 148 PIN electric interface units, provides modular power source and carries out with external system the interface that communicates.
The radiating portion operation principle of the CFP optical transceiver module of the present embodiment is as follows:
The effect of transmitter unit has been the conversion of the signal of telecommunication to light signal, mainly comprises chip of laser and monitor photo-diode chip, globe lens and monomode fiber.Input electrical signal drive laser chip light emitting, light signal by ball-lens coupling in monomode fiber.Globe lens plays the effect of optical focus.Drive circuit for laser is used for driving and controlling laser works.First, the electrical data signal number of input module is received by drive circuit for laser, and is modulated on the drive current of laser, and drive laser sends the laser with data modulated signal.Drive circuit for laser possesses automated power and controls (APC) function, the luminous power dorsad of monitor photo-diode chip monitoring laser device chip, and by output photoelectric stream signal feedback to automatic power control circuitry, the condition of work of automatic power control circuitry to laser adjusts, and stablizes to make its Output optical power.
Receiving unit operation principle is as follows:
Receiving unit is generally made up of optical fiber receive module and main amplifier, and wherein optical fiber receive module is made up of photo-detector and trans-impedance amplifier.The light data-signal of optical interface input module is received from module, the signal of telecommunication is converted to by the photo-detector of inside modules, be input to trans-impedance amplifier to carry out being enlarged into voltage signal, Trans-impedance preamplifier possesses automatic growth control (AGC) function, the signal of telecommunication by a small margin after the conversion of small-power input light is adopted to the multiplication factor of large gain, and the significantly signal after high-power input light conversion is adopted to the multiplication factor of little gain, thus the electrical signal amplitude making it export fluctuation is significantly smaller than the fluctuating range of input optical signal power.The signal that main amplifier receives after preamplifier amplifies carries out secondary amplification, the electrical data signal number of output module.Like this, the light signal of input module, after above-mentioned opto-electronic conversion and secondary are amplified, keeps constant output at the electric data output end of module, can not fluctuate with the size variation of input optical signal.
The radiating portion of the present embodiment and receiving unit are all configured with data clock restore funcitons, ensure photosignal in the transmission synchronous.
Embodiment two:
The difference of the present embodiment and embodiment one is, the light emission component (TOSA) of the present embodiment is ten groups, laser drive unit (LD) is ten groups, optical fiber receive module (ROSA) is ten groups, amplitude limiting amplifier circuit (LA) is ten groups, and the signal of telecommunication is ten tunnels, and light signal is ten tunnels.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a CFP optical transceiver module, comprise Optical Transmit Unit, light receiving unit, control unit, digital diagnosis unit, power supply unit, UFIU UMSC Fiber Interface Unit and electric interface unit, control unit and Optical Transmit Unit, light receiving unit, electric interface unit connects, described digital diagnosis unit is connected with electric interface unit, there is provided digital diagnosis signal to telecommunication device, it is characterized in that, described Optical Transmit Unit comprises organizes light emission component more, organize laser drive unit more, data clock recovery unit, light wavelength division multiplexing and optical isolator, many groups laser drive unit and data clock recovery circuit receive the multi-channel electric signal of electric interface unit input, carry out modulation and amplify process, carry out data clock sampling and caching process simultaneously, the signal of telecommunication is sent into and organizes light emission component more, each light emission component converts the signal of telecommunication of input to light signal and outputs to light wavelength division multiplexing, after light wavelength division multiplexing, synthesize a road light signal be transferred to optical network system through optical isolator, described light receiving unit comprises light Wave decomposing multiplexer, organize optical fiber receive module more, organize photo-detector more, many groups amplitude limiting amplifier circuit and data clock recovery circuit, received optical signal is divided into multipath light signal by light Wave decomposing multiplexer, transfer to respectively and organize optical fiber receive module more, often organize optical fiber receive module and the light signal of reception is converted into the signal of telecommunication, the signal of telecommunication is converted into voltage signal and passes to amplitude limiting amplifier circuit and data clock recovery circuit after amplifying across resistance, carry out data clock sampling and caching process, signal after process is sent to electric interface unit and exports.
2. CFP optical transceiver module according to claim 1, it is characterized in that, described many group light emission components are four groups, described many group laser drive unit are four groups, described many group optical fiber receive modules are four groups, described many group photo-detectors are four groups, described many group amplitude limiting amplifier circuits are four groups, described multi-channel electric signal is four tunnels, and described multipath light signal is four tunnels.
3. CFP optical transceiver module according to claim 1, it is characterized in that, described many group light emission components are ten groups, described many group laser drive unit are ten groups, described many group optical fiber receive modules are ten groups, described many group photo-detectors are ten groups, described many group amplitude limiting amplifier circuits are ten groups, described multi-channel electric signal is ten tunnels, and described multipath light signal is ten tunnels.
4. the CFP optical transceiver module according to claim 1-3, it is characterized in that, described Optical Transmit Unit also comprises preemphasis circuit, carry out preemphasis process to the signal of telecommunication, described light receiving unit also comprises equalizer, carries out equilibrium treatment to the signal of telecommunication.
5. the CFP optical transceiver module according to claim 1-3, is characterized in that, described light emission component adopts directly modulation laser array, and laser array meets Coarse Wavelength Division Multiplexing wavelength interval.
6. the CFP optical transceiver module according to claim 1-3, is characterized in that, described optical fiber receive module adopts PIN type photodetector array, and detector array meets Coarse Wavelength Division Multiplexing wavelength interval.
7. the CFP optical transceiver module according to claim 1-3, it is characterized in that, described digital diagnosis unit comprises logic control and interface circuit, A/D converter and D/A converter, logic control and interface circuit acquisition and processing module data, and monitor, the internal storage memory module information of logic control and interface circuit and user profile.
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| CN104702337A (en) * | 2015-02-15 | 2015-06-10 | 无锡市中新光通信技术有限公司 | 2.5 Gbps-speed long-span optical communication transmission device |
| CN105187128A (en) * | 2015-08-31 | 2015-12-23 | 武汉光迅科技股份有限公司 | 100G optical transceiver module with forward error correction function and based on direct modulation laser |
| CN105305192A (en) * | 2015-10-29 | 2016-02-03 | 成都新易盛通信技术股份有限公司 | 100G cable module based on CFP4 interface |
| CN105553561A (en) * | 2015-12-24 | 2016-05-04 | 武汉光迅科技股份有限公司 | 2x100G optical transceiver module |
| CN107017948A (en) * | 2017-04-06 | 2017-08-04 | 深圳市欧凌克光电科技有限公司 | A kind of SFP+ single fibers bi-directional dense wavelength division transceiver optical-electric module |
| CN107046440A (en) * | 2016-02-05 | 2017-08-15 | 苏州旭创科技有限公司 | Optical power monitoring component and optical module |
| WO2017215457A1 (en) * | 2016-06-17 | 2017-12-21 | 中兴通讯股份有限公司 | Damage compensation method and apparatus |
| CN109547114A (en) * | 2017-09-22 | 2019-03-29 | 深圳市欧凌克光电科技有限公司 | A kind of SFP encapsulation 100G opto-electronic receiver module |
| CN109995437A (en) * | 2018-01-03 | 2019-07-09 | 深圳市易飞扬通信技术有限公司 | Optic communication R-T unit |
| CN112165359A (en) * | 2020-09-28 | 2021-01-01 | 贵州航天天马机电科技有限公司 | Optical transmission system with receiving and transmitting multipath signals |
| CN114448510A (en) * | 2021-12-31 | 2022-05-06 | 航天南湖电子信息技术股份有限公司 | Optical network transmission system applied to radar calibration and radar |
| CN115333628A (en) * | 2022-08-18 | 2022-11-11 | 深圳睐芯科技有限公司 | Single optical fiber transmission device, system and method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104702337A (en) * | 2015-02-15 | 2015-06-10 | 无锡市中新光通信技术有限公司 | 2.5 Gbps-speed long-span optical communication transmission device |
| CN105187128A (en) * | 2015-08-31 | 2015-12-23 | 武汉光迅科技股份有限公司 | 100G optical transceiver module with forward error correction function and based on direct modulation laser |
| CN105305192A (en) * | 2015-10-29 | 2016-02-03 | 成都新易盛通信技术股份有限公司 | 100G cable module based on CFP4 interface |
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| CN107017948A (en) * | 2017-04-06 | 2017-08-04 | 深圳市欧凌克光电科技有限公司 | A kind of SFP+ single fibers bi-directional dense wavelength division transceiver optical-electric module |
| CN109547114A (en) * | 2017-09-22 | 2019-03-29 | 深圳市欧凌克光电科技有限公司 | A kind of SFP encapsulation 100G opto-electronic receiver module |
| CN109995437A (en) * | 2018-01-03 | 2019-07-09 | 深圳市易飞扬通信技术有限公司 | Optic communication R-T unit |
| CN112165359A (en) * | 2020-09-28 | 2021-01-01 | 贵州航天天马机电科技有限公司 | Optical transmission system with receiving and transmitting multipath signals |
| CN114448510A (en) * | 2021-12-31 | 2022-05-06 | 航天南湖电子信息技术股份有限公司 | Optical network transmission system applied to radar calibration and radar |
| CN114448510B (en) * | 2021-12-31 | 2023-11-10 | 航天南湖电子信息技术股份有限公司 | Optical network transmission system and radar applied to radar standard calibration |
| CN115333628A (en) * | 2022-08-18 | 2022-11-11 | 深圳睐芯科技有限公司 | Single optical fiber transmission device, system and method |
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Application publication date: 20150211 |