CN201118601Y - Uplink optical receiving module for optical fiber communication platform - Google Patents
Uplink optical receiving module for optical fiber communication platform Download PDFInfo
- Publication number
- CN201118601Y CN201118601Y CNU2007200458195U CN200720045819U CN201118601Y CN 201118601 Y CN201118601 Y CN 201118601Y CN U2007200458195 U CNU2007200458195 U CN U2007200458195U CN 200720045819 U CN200720045819 U CN 200720045819U CN 201118601 Y CN201118601 Y CN 201118601Y
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- pass filter
- optical
- optical fiber
- 25mhz
- receiving module
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Abstract
Disclosed is an uplink optical receiving module of an optical fiber communication system platform, relating to the optical fiber communication technical field. The utility model comprises an optical-electric conversion module, a 25MHz high pass filter, a prime RF amplifier, an electrically controlled attenuator, a post RF amplifier and a band-pass filter; wherein the optical-electric conversion module is provided with an optical signal output-input end and an electric signal output end; the 25MHz high pass filter is connected to the electric signal output end of the optical-electric conversion module, the output end of the 25MHz high pass filter is connected to the input end of the electrically controlled attenuator through the prime RF amplifier, the output end of the electrically controlled attenuator is connected with the band-pass filter through the post RF amplifier, and the band-pass filter is provided and connected with an electric signal output end. The uplink optical receiving module is compact in structure and convenient for installation; if arranged in the optical fiber communication system platform, the uplink optical receiving module can provide high-quality RF electric signals for a secondary optical fiber transmission network; the uplink optical receiving module has the advantages of little distortion, high sensitivity and high Signal-to-Noise and can effective suppress the invasive interference of mass noise of the frequency bands under 25MHz.
Description
Technical field
The utility model relates to technical field of optical fiber communication.
Background technology
Along with further pressing close to of information and people's life, people have be unable to do without network, and a kind of two-way metropolitan area broadband networks has become the network trend, and the optical fiber telecommunications system platform is the important tool that ensures Network Transmission.Existing optical fiber telecommunications system platform mainly is made up of descending light emitting devices, descending optical pickup apparatus, up optical pickup apparatus, state centralized control apparatus, it is huge because the frame structure of each device is complicated, floor space is bigger, and, owing to can only be arranged in outdoor mostly, the surface waterproofing measure is the emphasis of producing, installing, and also is difficult point.Above factor has strengthened production cost, has also formed Fibre Optical Communication Technology production and operation potential safety hazard.
The utility model content
The utility model purpose be to design a kind of can for fiber-optic communications traffic provide a kind of safe, intensification is produced, the up Optical Receivers of the optical fiber telecommunications system platform of operation.
The utility model comprises photoelectric conversion module, 25MHz high pass filter, prime radio frequency amplifier, electrically controlled attenuator, back level radio frequency amplifier and band pass filter; Described photoelectric conversion module is provided with light signal and exports into end and electrical signal, electrical signal at electric modular converter connects the 25MHz high pass filter, the output of 25MHz high pass filter is connected the input of electrically controlled attenuator by the prime radio frequency amplifier, the output of electrically controlled attenuator is connected with band pass filter by back level radio frequency amplifier, and described band pass filter is connected with electrical signal.
By above structure, the light signal distortion is little, highly sensitive, the signal to noise ratio height, can effectively suppress the invasion of the following frequency range influx noise of 25MHz and disturb, the utility model compact conformation, be convenient to install, save the land occupation area, the utility model is matched in the optical fiber telecommunications system platform, can be the rf signal that the secondary optical fiber transmission network provides high-quality.
In the radio-frequency (RF) output end of back level radio frequency amplifier and connect-the 20dB level detector.Can monitor in real time the output level of up optical receiver by-20dB level detector.
Operation principle of the present utility model: pass through photoelectric conversion module, at first light signal is converted to radiofrequency signal, pass through the following signal of 25MHz high pass filter elimination 25MHz again, prevent low-frequency disturbance, amplify and power amplification by radio frequency again, after band pass filter and-the 20dB level detector detects back radio frequency output.For the index of guaranteeing CTB, CSO and C/N and with the coupling of cable loss, specially between the two-stage amplification module, increased attenuator.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model by photoelectric conversion module, 25MHz high pass filter, prime radio frequency amplifier, electrically controlled attenuator, back level radio frequency amplifier, band pass filter and-the 20dB level detector forms.
Photoelectric conversion module is provided with light signal and exports into end and electrical signal, electrical signal at electric modular converter connects the 25MHz high pass filter, the output of 25MHz high pass filter is connected the input of electrically controlled attenuator by prime prime radio frequency amplifier, the output of electrically controlled attenuator is connected with band pass filter by back level radio frequency amplifier, described band pass filter is connected with electrical signal, at the electrical signal of band pass filter also and connect-the 20dB level detector.
Claims (2)
1, the up Optical Receivers of optical fiber telecommunications system platform is characterized in that comprising photoelectric conversion module, 25MHz high pass filter, prime radio frequency amplifier, electrically controlled attenuator, back level radio frequency amplifier and band pass filter; Described photoelectric conversion module is provided with light signal and exports into end and electrical signal, electrical signal at electric modular converter connects the 25MHz high pass filter, the output of 25MHz high pass filter is connected the input of electrically controlled attenuator by prime prime radio frequency amplifier, the output of electrically controlled attenuator is connected with band pass filter by back level radio frequency amplifier, and described band pass filter is connected with electrical signal.
2,, it is characterized in that at the electrical signal of band pass filter and connect-the 20dB level detector according to the up Optical Receivers of the described optical fiber telecommunications system platform of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200458195U CN201118601Y (en) | 2007-09-14 | 2007-09-14 | Uplink optical receiving module for optical fiber communication platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200458195U CN201118601Y (en) | 2007-09-14 | 2007-09-14 | Uplink optical receiving module for optical fiber communication platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118601Y true CN201118601Y (en) | 2008-09-17 |
Family
ID=39993196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200458195U Expired - Fee Related CN201118601Y (en) | 2007-09-14 | 2007-09-14 | Uplink optical receiving module for optical fiber communication platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201118601Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104444A (en) * | 2013-04-09 | 2014-10-15 | 深圳新飞通光电子技术有限公司 | LOS (Loss Optical Signal) noise filtering method |
| CN102474358B (en) * | 2009-07-06 | 2014-11-26 | 瑞典爱立信有限公司 | Improvements in reflective optical networks |
-
2007
- 2007-09-14 CN CNU2007200458195U patent/CN201118601Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474358B (en) * | 2009-07-06 | 2014-11-26 | 瑞典爱立信有限公司 | Improvements in reflective optical networks |
| US8909048B2 (en) | 2009-07-06 | 2014-12-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Reflective optical networks |
| CN104104444A (en) * | 2013-04-09 | 2014-10-15 | 深圳新飞通光电子技术有限公司 | LOS (Loss Optical Signal) noise filtering method |
| CN104104444B (en) * | 2013-04-09 | 2016-08-03 | 深圳新飞通光电子技术有限公司 | A kind of LOS noise filtering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Xibei Electronics Networkstallation Co., Ltd. Assignor: Yangzhou Xibei Opto-electrical Transmission Equipment Engineering Technology Ins Contract fulfillment period: 2009.1.16 to 2015.1.16 Contract record no.: 2009320000056 Denomination of utility model: Uplink optical receiving module for optical fiber communication platform Granted publication date: 20080917 License type: Exclusive license Record date: 20090201 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.1.16 TO 2015.1.16; CHANGE OF CONTRACT Name of requester: JIANGSU XIBEI ELECTRONIC NETWORKS CO., LTD. Effective date: 20090201 |
|
| 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: 20080917 Termination date: 20160914 |