CN105846903A - Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module - Google Patents
Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module Download PDFInfo
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- CN105846903A CN105846903A CN201610162713.7A CN201610162713A CN105846903A CN 105846903 A CN105846903 A CN 105846903A CN 201610162713 A CN201610162713 A CN 201610162713A CN 105846903 A CN105846903 A CN 105846903A
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- light source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/697—Arrangements for reducing noise and distortion
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module. The low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module is composed of an optical transmitting unit and an optical receiving unit; the input of the optical transmitting unit and the output of the optical receiving unit adopt TTL level interfaces; the optical transmitting unit comprises a temperature compensation module; the temperature compensation module is used for compensating the optical power of a light source according to the temperature of the light source; the optical receiving unit includes a photoelectric conversion module and a conversion resistor; the photoelectric conversion module is used for converting received optical signals into photocurrent; and the conversion resistor is used for converting the photocurrent into voltage. The receiving-transmitting integrated SFP optical module of the invention is free of low frequency cut-off problems, and can work at DC under low frequency. The power consumption of the integrated SFP optical module of the invention is low. The hardware and software configuration of an equipment end can be simplified.
Description
Technical field
The present invention relates to optical module field, particularly to low rate DC～20Mbps transceiver SFP optical module.
Background technology
In a lot of application of optic communication, message transmission rate improves constantly, to realize the transmission of more effective data.But one
In a little special applications, data volume only has tens Kb/s to tens Mb/s, but reliability requirement is the highest.Such as power system
For the IEEE C37.94 standard of signal transmission, definition speed is 2.048Mb/s, minimum can arrive 64kb/s.Such speed
Rate, conventional SFP cannot be carried out transmitting, may lose some low-frequency information.
At present, there are some to use the backward compatible scheme to low rate of two-forty SFP optical module, but its implementation is the most multiple
Miscellaneous, cost is high and the reliability of low-frequency transmission speed is the highest, although low-frequency cutoff problem, the APC integrated with in optical module
Circuit is relevant with agc circuit, even if by the configuration of hardware with software, it is possible to reduce low-frequency cut-off frequency, the most still
The problem being not fee from low-frequency cutoff.Especially when some special applications, inconvenience the most completely.
Summary of the invention
It is an object of the invention to solve conventional SFP optical module and can there is the problem of low-frequency cutoff, and simplify equipment end
Software and hardware configuration, reduces power consumption.
In order to realize foregoing invention purpose, the present invention provides a kind of low rate DC～20Mbps transceiver SFP optical module, by
Optical Transmit Unit and light receiving unit are constituted, wherein, and the input of described Optical Transmit Unit and the outfan of described light receiving unit
All use Transistor-Transistor Logic level interface, and, described Optical Transmit Unit includes temperature compensation module, wherein said temperature-compensating mould
Block, for the temperature according to light source, compensates the luminous power of described light source；
Described light receiving unit includes photoelectric conversion module and transfer resistance, and wherein said photoelectric conversion module, for by reception
Optical signal is converted to photoelectric current, and described transfer resistance, for being converted to voltage by described photoelectric current.
According to a kind of specific embodiment, described SFP optical module also there is a preliminary data input pin and one standby
Data out pin, is respectively used to the data input of described Optical Transmit Unit and the data output of described light receiving unit.
According to a kind of specific embodiment, in described Optical Transmit Unit, light source drive is defeated according to described Optical Transmit Unit
Enter the Transistor-Transistor Logic level signal of end input, drive described light source, and described temperature compensation module is believed according to the temperature of described light source
Breath, controls the light source drive current of described light source drive；
In described light receiving unit, after optical receiver receives optical signal, converted optical signals to by described photoelectric conversion module
Photoelectric current, and by described transfer resistance, described photoelectric current is converted to voltage, then by limiting amplifier, export TTL
Level signal.
According to a kind of specific embodiment, the described Transistor-Transistor Logic level signal inputting described Optical Transmit Unit coupled to institute through DC
State light source drive.
According to a kind of specific embodiment, described temperature compensation module includes that luminous power compensates circuit and temperature sensor, described
Luminous power compensates the temperature information of the described light source that circuit detects according to described temperature sensor, controls the light of described light source drive
Source drives electric current.
According to a kind of specific embodiment, described SFP optical module also includes micro-control unit, described Optical Transmit Unit and institute
State light receiving unit and be respectively arranged with luminous power detection module, wherein said micro-control unit, be used for gathering described SFP optical mode
The temperature of block, supply voltage, light source drive current, transmitting terminal luminous power and the information of receiving terminal luminous power, and by integrated
Circuit bus and external device communication.
Compared with prior art, beneficial effects of the present invention:
The transceiver SFP optical module of the present invention is by using in the input of Optical Transmit Unit and the output of light receiving unit respectively
Transistor-Transistor Logic level interface, effectively to transmit IEEE C37.94 and some special low-rate signals.Further, at Optical Transmit Unit
Light source is compensated by middle employing temperature compensation module, uses photoelectric conversion module and transfer resistance in light receiving unit simultaneously,
Converting optical signals to voltage, so that the transceiver SFP optical module of the present invention does not exist low-frequency cutoff problem, low frequency can
With work to DC.And the present invention not only power consumption is relatively low, also simplify the software and hardware configuration of equipment end.
Accompanying drawing explanation
Fig. 1 is the structural representation of transceiver SFP optical module of the present invention；
Fig. 2 is the pin schematic diagram of transceiver SFP optical module of the present invention；
Fig. 3 is that a kind of of transceiver SFP optical module of the present invention implements structural representation.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.But this should be interpreted as the above-mentioned master of the present invention
The scope of topic is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
The structural representation of transceiver SFP optical module of the present invention as shown in Figure 1；Wherein, low rate of the present invention
DC～20Mbps transceiver SFP optical module, is made up of Optical Transmit Unit and light receiving unit, it is characterised in that light emission
The input of unit and the output of light receiving unit use Transistor-Transistor Logic level interface, and, Optical Transmit Unit includes temperature-compensating mould
Block, wherein temperature compensation module, for the temperature according to light source, compensate the luminous power of light source.
Light receiving unit includes photoelectric conversion module and transfer resistance, wherein photoelectric conversion module, for being turned by the optical signal of reception
Being changed to photoelectric current, transfer resistance, for being converted to voltage by photoelectric current.
Concrete, in Optical Transmit Unit, the Transistor-Transistor Logic level letter that light source drive inputs according to the input of Optical Transmit Unit
Number, drive light source, and temperature compensation module is according to the temperature information of light source, controls the light source drive current of light source drive.
In light receiving unit, after optical receiver receives optical signal, convert optical signals to photoelectric current by photoelectric conversion module,
And by transfer resistance, photoelectric current is converted to voltage, then by limiting amplifier, export Transistor-Transistor Logic level signal.
When implementing, the TTL signal of input Optical Transmit Unit is coupled to light source drive through DC, and light source drive drives light
Source is according to 0, and 1 signal goes out light, and the present invention is applicable to the light sources such as VCSEL, FP, DFB and LED.The present invention's
In transceiver SFP optical module, photoelectric conversion module is photodiode.
Temperature compensation module includes that luminous power compensates circuit and temperature sensor, and luminous power compensates circuit and adjusts according to condition of different temperatures
The light source drive current of whole light source drive.In the transceiver SFP optical module of the present invention, temperature compensation module uses
The mode of thermistor compensation.Suitable critesistor is selected in temperature sensor, and luminous power is compensated circuit and obtained by critesistor
The temperature information of light source luminescent, and according to the temperature characteristics of light source luminescent, it is achieved under condition of different temperatures, adjust light source drive
The light source drive current of dynamic device, reaches the effect that luminous power compensates.
The pin schematic diagram of transceiver SFP optical module of the present invention as shown in Figure 2；Wherein, transceiver SFP of the present invention
Optical module cancels the Tx_fault pin in original SFP optical module, is defined as available transmitting terminal data in pin,
The most also cancel the Rate_select pin in original SFP optical module, be defined as available receiving terminal data output
Foot.Therefore, transceiver SFP optical module of the present invention also has a preliminary data input pin and a preliminary data output
Pin, is respectively used to the data input of Optical Transmit Unit and the data output of light receiving unit.
When implementing, especially in special applications, transceiver SFP optical module of the present invention can cancel Pin2Tx_fault pin
With the function of Pin7Rate_select pin, and it is available transmitting terminal data input pipe by Pin2Tx_fault pin definitions
Foot, is available receiving terminal data out pin by Pin7Rate_select pin definitions.Table one is transceiver of the present invention
SFP optical module pin definitions table.
Table 1
A kind of in conjunction with the transceiver SFP optical module of the present invention shown in Fig. 3 implements structural representation；Wherein, SFP optical module
Also include that micro-control unit, Optical Transmit Unit and light receiving unit are respectively arranged with luminous power detection module, wherein microcontroller list
Unit, for gathering the temperature of SFP optical module, supply voltage, light source drive current, transmitting terminal luminous power and receiving terminal light merit
The information of rate, and by IC bus and external device communication.
Concrete, micro-control unit is connected with light source drive, and to gather light source drive current information, and micro-control unit divides
It is not connected with transmitting terminal luminous power detection module and receiving terminal luminous power detection module, to gather transmitting terminal luminous power and receiving terminal light
Power information.Meanwhile, the voltage of Optical Transmit Unit and the feeder ear of light receiving unit is detected by micro-control unit respectively, with
Gather the supply voltage of Optical Transmit Unit and light receiving unit respectively.Further, transceiver SFP optical module of the present invention is provided with
Temperature sensor, micro-control unit is by the signal sampling to temperature sensor, to gather the temperature of SFP optical module.
Micro-control unit in transceiver SFP optical module of the present invention is integrated microcontroller, and it passes through IC bus,
The information output gathered is to connected external equipment.
Above in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail, but the present invention has been not restricted to above-mentioned reality
Executing mode, in the case of without departing from the spirit and scope of claims hereof, those skilled in the art may be made that various
Amendment or remodeling.
Claims (6)
1. low rate DC～a 20Mbps transceiver SFP optical module, by Optical Transmit Unit and light-receiving
Unit is constituted, it is characterised in that the input of described Optical Transmit Unit and the outfan of described light receiving unit
All use Transistor-Transistor Logic level interface, and, described Optical Transmit Unit includes temperature compensation module, wherein said temperature
Degree compensating module, for the temperature according to light source, compensates the luminous power of described light source；
Described light receiving unit includes photoelectric conversion module and transfer resistance, wherein said photoelectric conversion module,
For the optical signal of reception is converted to photoelectric current, described transfer resistance, for being converted to described photoelectric current
Voltage.
2. low rate DC as claimed in claim 1～20Mbps transceiver SFP optical module, its feature
Being, described SFP optical module also has a preliminary data input pin and a preliminary data outlet tube
Foot, is respectively used to the data input of described Optical Transmit Unit and the data output of described light receiving unit.
3. low rate DC as claimed in claim 1～20Mbps transceiver SFP optical module, its feature
Being, in described Optical Transmit Unit, light source drive inputs according to the input of described Optical Transmit Unit
Transistor-Transistor Logic level signal, drives described light source, and described temperature compensation module is believed according to the temperature of described light source
Breath, controls the light source drive current of described light source drive；
In described light receiving unit, after optical receiver receives optical signal, will by described photoelectric conversion module
Optical signal is converted to photoelectric current, and by described transfer resistance, described photoelectric current is converted to voltage, then leads to
Cross limiting amplifier, export Transistor-Transistor Logic level signal.
4. low rate DC as claimed in claim 3～20Mbps transceiver SFP optical module, its feature
Being, the described Transistor-Transistor Logic level signal inputting described Optical Transmit Unit coupled to the driving of described light source through DC
Device.
5. low rate DC as claimed in claim 3～20Mbps transceiver SFP optical module, its feature
Being, described temperature compensation module includes that luminous power compensates circuit and temperature sensor, and described luminous power compensates
The temperature information of the described light source that circuit detects according to described temperature sensor, controls described light source drive
Light source drive current.
6. low rate DC as claimed in claim 5～20Mbps transceiver SFP optical module, its feature
Being, described SFP optical module also includes micro-control unit, described Optical Transmit Unit and described light receiving unit
It is respectively arranged with luminous power detection module, wherein said micro-control unit, is used for gathering described SFP optical module
Temperature, supply voltage, light source drive current, transmitting terminal luminous power and the information of receiving terminal luminous power, and
And by IC bus and external device communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162713.7A CN105846903A (en) | 2016-03-21 | 2016-03-21 | Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162713.7A CN105846903A (en) | 2016-03-21 | 2016-03-21 | Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module |
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| CN105846903A true CN105846903A (en) | 2016-08-10 |
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| CN201610162713.7A Pending CN105846903A (en) | 2016-03-21 | 2016-03-21 | Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253991A (en) * | 2016-09-19 | 2016-12-21 | 成都新易盛通信技术股份有限公司 | The transceiver of low rate, double receipts and double SFF optical modules |
| CN112505853A (en) * | 2020-12-11 | 2021-03-16 | 江苏奥雷光电有限公司 | DC-50 Mbps compatible low-speed signal transmission photoelectric module design method |
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| CN102752055A (en) * | 2012-07-12 | 2012-10-24 | 青岛海信宽带多媒体技术有限公司 | Passive optical network and optical module of optical network unit thereof |
| CN103391137A (en) * | 2013-08-22 | 2013-11-13 | 成都新易盛通信技术股份有限公司 | 1*9 low-rate optical module with DDM (data distribution management) function |
| CN203377886U (en) * | 2013-08-22 | 2014-01-01 | 成都新易盛通信技术股份有限公司 | 1*9 low rate optical module with DDM function |
| CN104301042A (en) * | 2014-10-24 | 2015-01-21 | 成都新易盛通信技术股份有限公司 | SFP double emitting optical module and optical communication system |
| CN205430253U (en) * | 2016-03-21 | 2016-08-03 | 成都新易盛通信技术股份有限公司 | Low rate DC~20Mbps receives and dispatches integrative SFP optical module |
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2016
- 2016-03-21 CN CN201610162713.7A patent/CN105846903A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102752055A (en) * | 2012-07-12 | 2012-10-24 | 青岛海信宽带多媒体技术有限公司 | Passive optical network and optical module of optical network unit thereof |
| CN103391137A (en) * | 2013-08-22 | 2013-11-13 | 成都新易盛通信技术股份有限公司 | 1*9 low-rate optical module with DDM (data distribution management) function |
| CN203377886U (en) * | 2013-08-22 | 2014-01-01 | 成都新易盛通信技术股份有限公司 | 1*9 low rate optical module with DDM function |
| CN104301042A (en) * | 2014-10-24 | 2015-01-21 | 成都新易盛通信技术股份有限公司 | SFP double emitting optical module and optical communication system |
| CN205430253U (en) * | 2016-03-21 | 2016-08-03 | 成都新易盛通信技术股份有限公司 | Low rate DC~20Mbps receives and dispatches integrative SFP optical module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253991A (en) * | 2016-09-19 | 2016-12-21 | 成都新易盛通信技术股份有限公司 | The transceiver of low rate, double receipts and double SFF optical modules |
| CN112505853A (en) * | 2020-12-11 | 2021-03-16 | 江苏奥雷光电有限公司 | DC-50 Mbps compatible low-speed signal transmission photoelectric module design method |
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Application publication date: 20160810 |
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