CN207947780U - A kind of SFP optical modules having both automatic gain and automated power control - Google Patents
A kind of SFP optical modules having both automatic gain and automated power control Download PDFInfo
- Publication number
- CN207947780U CN207947780U CN201820101104.5U CN201820101104U CN207947780U CN 207947780 U CN207947780 U CN 207947780U CN 201820101104 U CN201820101104 U CN 201820101104U CN 207947780 U CN207947780 U CN 207947780U
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- circuit
- power control
- automatic gain
- emitting module
- pcba board
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Abstract
The utility model discloses a kind of SFP optical modules having both automatic gain and automated power control, including emitting module, receiving unit and PCBA board, the emitting module and receiving unit are electrically connected with PCBA board, the receiving unit includes photoelectric detector and preamplifier, the photoelectric detector is connected with preamplifier, and the preamplifier includes trans-impedance amplifier and automatic gain control circuit；The trans-impedance amplifier is connected with automatic gain control circuit, the PCBA board is equipped with optical transmission circuit, optical receiving circuit and the plug for being set to PCBA board one end, the optical transmission circuit is electrically connected with emitting module, and the optical receiving circuit is electrically connected with receiving unit；The utility model stability is high, it is adaptable, can gain electric signal, correct the deviation of emitting module, there is good market application value.
Description
Technical field
The utility model is related to optical-fibre communications field more particularly to a kind of automatic gain and automated power controls of having both
SFP optical modules.
Background technology
SFP (SMALL FORM PLUGGABLE, small pluggable) optical module is mainly used for realizing that the high speed of information is logical
Letter, with the high speed development of communication network technique, optical fiber communication technology is widely used and popular, and especially broadband services is wide
General application, capacity and closeness to optical network system have higher requirement, the continuous expansion of communication network primary transmission capacity
Big and rate continuous improvement is so that fiber optic communication becomes the prevailing transmission means of present information network.In present optical communication net
In network, such as wide area network (WAN), Metropolitan Area Network (MAN) (MAN), week domain net (LAN) are required as one of core opto-electronic device
Optical transceiver module type it is more and more, it is desirable that it is also higher and higher；But existing SFP optical modules are receiving remote pass
After defeated optical signal, farther out due to transmission range, when SFP receives optical signal, optical signal is very faint, directly believes light
Number switch to electric signal into processing, easily causes that electric signal is faint to be unable to get more complete data packet；And SFP optical modules use
After a period of time, light source laser diodes age, when electric signal is switched to optical signal launch light by SFP, the power of electric signal can not
It is adjusted according to the degree of aging of light source laser diode, output optical signal output intensity on the weak side or unstable.
The prior art is defective, needs to improve.
Utility model content
In order to solve defect existing for present technology, the utility model provides one kind and having both automatic gain and automated power
The SFP optical modules of control.
Technology official documents and correspondence provided by the utility model, a kind of SFP optical modules having both automatic gain and automated power control, packet
Emitting module, receiving unit and PCBA board are included, the emitting module and receiving unit are electrically connected with PCBA board, the reception
Component includes photoelectric detector and preamplifier, and the photoelectric detector is connected with preamplifier, the preamplifier
Including trans-impedance amplifier and automatic gain control circuit；The trans-impedance amplifier is connected with automatic gain control circuit, described
PCBA board is equipped with optical transmission circuit, optical receiving circuit and the plug for being set to PCBA board one end, the optical transmission circuit and hair
Component electric connection is penetrated, the optical receiving circuit is electrically connected with receiving unit, and automated power is equipped in the optical transmission circuit
Control circuit, the automatic power control circuit include input channel, negative feedback control loop and reference channel, and the input is logical
Road is series at the reference channel branch road in parallel with negative feedback control loop.
Preferably, the optical transmission circuit further includes difference current switching circuit, bias current generator and fault warning
Circuit, the difference current switching circuit, bias current generator and automatic power control circuit is protected to contact successively, the event
The both ends of barrier alarm protection circuit are respectively across the output of the input terminal and automatic power control circuit of difference current switching circuit
End, the difference current switching circuit are connect with plug.
Preferably, the receiving circuit includes driving chip, limiting amplifier and storage chip, the driving chip and storage
Chip electric connection is deposited, described limiting amplifier one end is connect with driving chip, and the other end is connect with trans-impedance amplifier, the drive
Dynamic chip is electrically connected with plug.
Preferably, emitting module includes light source laser diode, LD chips and monitor photodiode, the LD chips point
It is not connect with light source laser diode and monitor photodiode, the monitor photodiode is set to light source laser diode
Side, the light intensity for measuring photodiode.
Preferably, the auto-gain circuit includes gain controlled amplifying circuit, AGC wave detectors and low pass smothing filtering
Device, the AGC wave detectors and the series connection of low pass smoothing filter, the both ends of the gain controlled amplifying circuit are connected to AGC
The output end of the input terminal and low pass smoothing filter of wave detector.
Advantageous effect compared with the existing technology, the utility model in receiving unit by being arranged automatic growth control electricity
Road, the optical signal to realize to distance reception carried out the processing of automatic gain, electric signal are made to be put when changing electric signal
Greatly, to obtain complete data packet；By the way that two pole of automatic power control circuit and monitoring photoelectricity is arranged in optical transmission circuit
Pipe carries even if can increase the power of source diode if after making light source laser diode aging by automatic power control circuit
The light intensity of bloom source laser diode, while monitor photodiode has the function of monitoring light source laser diode, protects light
The normal light intensity of source laser diode exports；The utility model stability is high, it is adaptable, can gain electric signal, correct hair
The deviation of component is penetrated, there is good market application value.
Description of the drawings
Fig. 1 is that the utility model is connected schematic diagram.
Specific implementation mode
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection model of the appended claims for the utility model
It encloses.
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.Make to this on the contrary, purpose of providing these embodiments is
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " vertical ", " horizontal ",
"left", "right" and similar statement are for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
It elaborates below in conjunction with the accompanying drawings to the utility model.
As shown in Figure 1, a kind of SFP optical modules having both automatic gain and automated power control, including emitting module, reception
Component and PCBA board, the emitting module and receiving unit are electrically connected with PCBA board, and the receiving unit includes photoelectricity inspection
It surveys device and preamplifier, the photoelectric detector is connected with preamplifier, the preamplifier includes trans-impedance amplifier
And automatic gain control circuit；The trans-impedance amplifier is connected with automatic gain control circuit, and the PCBA board is sent out equipped with light
Transmit-receive radio road, optical receiving circuit and the plug for being set to PCBA board one end, the optical transmission circuit are electrically connected with emitting module, institute
It states optical receiving circuit to be electrically connected with receiving unit, automatic power control circuit is equipped in the optical transmission circuit, it is described automatic
Power control circuit includes input channel, negative feedback control loop and reference channel, and the input channel is series at reference channel
The branch road in parallel with negative feedback control loop.
Preferably, the optical transmission circuit further includes difference current switching circuit, bias current generator and fault warning
Circuit, the difference current switching circuit, bias current generator and automatic power control circuit is protected to contact successively, the event
The both ends of barrier alarm protection circuit are respectively across the output of the input terminal and automatic power control circuit of difference current switching circuit
End, the difference current switching circuit are connect with plug.
Preferably, the receiving circuit includes driving chip, limiting amplifier and storage chip, the driving chip and storage
Chip electric connection is deposited, described limiting amplifier one end is connect with driving chip, and the other end is connect with trans-impedance amplifier, the drive
Dynamic chip is electrically connected with plug.
Preferably, emitting module includes light source laser diode, LD chips and monitor photodiode, the LD chips point
It is not connect with light source laser diode and monitor photodiode, the monitor photodiode is set to light source laser diode
Side, the light intensity for measuring photodiode.
Preferably, the auto-gain circuit includes gain controlled amplifying circuit, AGC wave detectors and low pass smothing filtering
Device, the AGC wave detectors and the series connection of low pass smoothing filter, the both ends of the gain controlled amplifying circuit are connected to AGC
The output end of the input terminal and low pass smoothing filter of wave detector.
Further, the plug is hard contact, and SFP optical modules insert in the SFP slots of interchanger by hard contact
Interior, interchanger is powered by hard contact for entire SFP optical modules.
The operation principle of the utility model：The electric signal provided by interchanger forms modulation after difference current switching circuit
Electric current, then DC bias current is formed after bias current generator, then enter automatic power control circuit, electric signal passes through
Enter back into reference channel after input channel, reference channel submits the output valve of standard, and the output valve of electric signal and standard is compared
After relatively, negative feedback control loop carries out feedback regulation to electric signal, so that electric signal is exported with the output valve of standard, electric signal
Enter light source laser diode after LD chips, light source laser diode sends out laser signal, while monitor photodiode
The laser sent out is monitored, and feeds back to LD chips, LD chips feed back to negative feedback control loop, carry out electric signal output
The adjusting of value makes up the decaying brought due to aging；Photoelectric detector receives the fiber-optic signal that remote transmission comes, photoelectricity inspection
It surveys device and optical signal is switched into electric signal, into automatic gain control circuit, the gain love control in automatic gain control circuit is amplified
Signal is amplified by circuit, while being filtered out low frequency modulations component through AGC detectors and through low pass smoothing filter and being made an uproar
After sound, electric current is switched into voltage into trans-impedance amplifier, filtered out amplitude into limiting amplifier later, while further putting
Greatly, enter driving chip later, electric signal is entered into interchanger by plug, the storage chip being connect with driving chip is for storing
Identification data packet.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection model of the appended claims for the utility model
It encloses.
Claims (5)
1. a kind of SFP optical modules having both automatic gain and automated power control, which is characterized in that including emitting module, receive
Component and PCBA board, the emitting module and receiving unit are electrically connected with PCBA board, and the receiving unit includes photoelectricity inspection
It surveys device and preamplifier, the photoelectric detector is connected with preamplifier, the preamplifier includes trans-impedance amplifier
And automatic gain control circuit；The trans-impedance amplifier is connected with automatic gain control circuit, and the PCBA board is sent out equipped with light
Transmit-receive radio road, optical receiving circuit and the plug for being set to PCBA board one end, the optical transmission circuit are electrically connected with emitting module, institute
It states optical receiving circuit to be electrically connected with receiving unit, automatic power control circuit is equipped in the optical transmission circuit, it is described automatic
Power control circuit includes input channel, negative feedback control loop and reference channel, and the input channel is series at reference channel
The branch road in parallel with negative feedback control loop.
2. a kind of SFP optical modules having both automatic gain and automated power control according to claim 1, which is characterized in that
The optical transmission circuit further includes difference current switching circuit, bias current generator and fault warning protection circuit, the difference
Current switching circuit, bias current generator and automatic power control circuit is divided to contact successively, circuit is protected in the fault warning
Both ends respectively across the input terminal of difference current switching circuit and the output end of automatic power control circuit, the difference current
Switching circuit is connect with plug.
3. a kind of SFP optical modules having both automatic gain and automated power control according to claim 2, which is characterized in that
The receiving circuit includes driving chip, limiting amplifier and storage chip, and the driving chip is electrically connected with storage chip,
Described limiting amplifier one end is connect with driving chip, and the other end is connect with trans-impedance amplifier, the driving chip and plug electricity
Property connection.
4. a kind of SFP optical modules having both automatic gain and automated power control according to claim 3, which is characterized in that
Emitting module includes light source laser diode, LD chips and monitor photodiode, the LD chips respectively with light source laser two
Pole pipe is connected with monitor photodiode, and the monitor photodiode is set to the side of light source laser diode, for surveying
Measure the light intensity of photodiode.
5. a kind of SFP optical modules having both automatic gain and automated power control according to claim 4, which is characterized in that
The auto-gain circuit includes gain controlled amplifying circuit, AGC wave detectors and low pass smoothing filter, the AGC wave detectors
Connect with low pass smoothing filter, the both ends of the gain controlled amplifying circuit be connected to AGC wave detectors input terminal and
The output end of low pass smoothing filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820101104.5U CN207947780U (en) | 2018-01-22 | 2018-01-22 | A kind of SFP optical modules having both automatic gain and automated power control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820101104.5U CN207947780U (en) | 2018-01-22 | 2018-01-22 | A kind of SFP optical modules having both automatic gain and automated power control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207947780U true CN207947780U (en) | 2018-10-09 |
Family
ID=63702109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820101104.5U Expired - Fee Related CN207947780U (en) | 2018-01-22 | 2018-01-22 | A kind of SFP optical modules having both automatic gain and automated power control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207947780U (en) |
-
2018
- 2018-01-22 CN CN201820101104.5U patent/CN207947780U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190529 Address after: 518000 KAILIAN WIRE WORKSHOP 3201, No. 121 SILI ROAD, KUANLAN STREET, LONGHUA DISTRICT, SHENZHEN PROVINCE Patentee after: Shenzhen Xinli Ultra-Precision Connector Technology Co., Ltd. Address before: 518000 B, 3rd floor, No. 12, Luowuwei New Village, Dalang Street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Xi Rui Light Communication Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181009 Termination date: 20210122 |