CN104702337A - 2.5 Gbps-speed long-span optical communication transmission device - Google Patents
2.5 Gbps-speed long-span optical communication transmission device Download PDFInfo
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- CN104702337A CN104702337A CN201510082677.9A CN201510082677A CN104702337A CN 104702337 A CN104702337 A CN 104702337A CN 201510082677 A CN201510082677 A CN 201510082677A CN 104702337 A CN104702337 A CN 104702337A
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Abstract
The invention discloses a 2.5 Gbps-speed long-span optical communication transmission device. The 2.5 Gbps-speed long-span optical communication transmission device comprises a 2.5 Gbps optical receiving module, an electric absorption modulation emitting module with SBS suppression technique, and an optical amplifier; the 2.5 Gbps optical receiving module converts input optical signals into electric signals and carries out shaping, amplifying and clock regeneration on the electric signals; the electric absorption modulation emitting module is responsible for converting the electric signals into optical signals, and the optical amplifier is responsible for amplifying the optical signals. The 2.5 Gbps-speed long-span optical communication transmission device uses the electric absorption modulation emitting module in a 10 Gbps system to perform 2.5 Gpbs spectrum emitting, through adding disturbance, the nonlinear threshold of the optical module is improved, and the 2.5 Gbps super-long-span optical communication transmission is realized through matching with the 2.5 Gbps optical receiving module.
Description
Technical field:
The invention belongs to optical communication transmission field, particularly a kind of 2.5Gbps speed long span optical communication transmitting device.
Background technology:
2.5Gbps overlength span optical communication transmission technology, main limiting factor is power and dispersion.Under normal circumstances, 2.5Gbps optical module transmitting optical power about 0dBm, can use fiber amplifier to improve transmitting optical power, 2.5Gbps optical module dispersion tolerance is generally 3200ps/nm, in G.652 optical cable, can transmit about 160km, farther transmission range just must use dispersion compensation.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention:
The object of the present invention is to provide a kind of 2.5Gbps speed long span optical communication transmitting device, thus overcome above-mentioned defect of the prior art.
For achieving the above object, the invention provides
A kind of 2.5Gbps speed long span optical communication transmitting device, comprising: 10Gbps electro-absorption modulation transmitter module, SBS suppression module, image intensifer, 2.5Gbps Optical Receivers; Described 10Gbps electro-absorption modulation transmitter module, is responsible for transform electrical signals to become light signal; Described SBS suppression module, applies dither signal, broadening emission spectrum; Described image intensifer, is responsible for optical signal amplification to export; Described 2.5Gbps Optical Receivers, changes into the signal of telecommunication input optical signal, and carries out shaping, amplification and clock regeneration to the signal of telecommunication.
Preferably, in technical scheme, 10Gbps electro-absorption modulation transmitter module comprises Electroabsorption Modulated Laser, biasing circuit, drive circuit, data clock recovery CDR, MCU, Electroabsorption Modulated Laser is connected with biasing circuit, drive circuit respectively, and data clock recovers CDR and is connected with drive circuit, MCU respectively.
Preferably, in technical scheme, Electroabsorption Modulated Laser loads 2.5Gbps signal.
Preferably, in technical scheme, Electroabsorption Modulated Laser is selected EA to modulate TOSA or EA and is modulated butterfly encapsulated laser.
Preferably, in technical scheme, SBS suppression module is shake control module, shakes control module and is connected with the biasing circuit in 10Gbps electro-absorption modulation transmitter module, MCU respectively.
Preferably, in technical scheme, dither signal comprises square wave, trapezoidal wave, triangular wave, sine wave.
Preferably, in technical scheme, 2.5Gbps Optical Receivers comprise connect successively 2.5G PIN, recover CDR across resistance amplification module, limited range enlargement module, data clock, data clock recovers the MCU connection in CDR and 10Gbps electro-absorption modulation transmitter module.
Preferably, in technical scheme, the SBS threshold value that image intensifer exports light reaches 19dBm-21dBm.
Compared with prior art, the present invention has following beneficial effect:
Use electro-absorption modulation transmitter module in 10Gbps system to carry out the spectral emissions of 2.5Gpbs, by adding disturbance, improving the non-linear threshold of optical module, coordinating 2.5Gbps Optical Receivers, realize the optical communication transmission of 2.5Gbps overlength span.
Accompanying drawing illustrates:
Fig. 1 is the module diagram of 2.5Gbps speed long span optical communication transmitting device of the present invention;
Fig. 2 is the raising test coordinate diagram of band SBS inhibit feature for Brillouin scattering threshold value;
Fig. 3 is the transmission test figure of 2.5Gbps speed long span optical communication transmitting device of the present invention;
Embodiment:
Below the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1, a kind of 2.5Gbps speed long span optical communication transmitting device, comprising: 10Gbps electro-absorption modulation transmitter module, SBS suppression module, image intensifer, 2.5Gbps Optical Receivers; Described 10Gbps electro-absorption modulation transmitter module comprises EA and modulates TOSA laser, biasing circuit, drive circuit, data clock recovery CDR, MCU, EA modulates TOSA laser and is connected with biasing circuit, drive circuit respectively, data clock recovers CDR and is connected with drive circuit, MCU respectively, and EA modulates TOSA laser and is responsible for transform electrical signals to become light signal; Described SBS suppression module is shake control module, shake control module is connected with the biasing circuit in 10Gbps electro-absorption modulation transmitter module, MCU respectively, biasing circuit applies dither signal, superposition amplitude and frequency-adjustable modulating wave, these modulating waves comprise square wave, trapezoidal wave, triangular wave, sine wave etc., by means such as the amplitude of accommodation, slope, frequencies, broadening emission spectrum; Described image intensifer, be responsible for optical signal amplification to export, the SBS threshold value exporting light reaches 19dBm-21dBm; Described 2.5Gbps Optical Receivers comprise connect successively 2.5G PIN, across resistance amplification module, limited range enlargement module, data clock recover CDR, the MCU that data clock recovers in CDR and 10Gbps electro-absorption modulation transmitter module connects, input optical signal is changed into the signal of telecommunication, and shaping, amplification and clock regeneration are carried out to the signal of telecommunication.
As shown in Figure 2, test tape SBS inhibit feature, for the raising situation of Brillouin scattering threshold value, does not add the situation of jitter modulation, and optical fiber input light obviously occurs non-linear to more than 12dBm, and after increasing jitter modulation, optical fiber input light is until 17dBm also shows good linear.
As shown in Figure 3, test uses power amplifier 19dBm, G652 single-mode optical fiber length 275km, and put reception minimum power-38dBm in advance, entire system loss is that 57dB, 2.5Gbps transmit 2 hours without error code.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (8)
1. a 2.5Gbps speed long span optical communication transmitting device, is characterized in that: comprising: 10Gbps electro-absorption modulation transmitter module, SBS suppression module, image intensifer, 2.5Gbps Optical Receivers; Described 10Gbps electro-absorption modulation transmitter module, is responsible for transform electrical signals to become light signal; Described SBS suppression module, applies dither signal, broadening emission spectrum; Described image intensifer, is responsible for optical signal amplification to export; Described 2.5Gbps Optical Receivers, changes into the signal of telecommunication input optical signal, and carries out shaping, amplification and clock regeneration to the signal of telecommunication.
2. 2.5Gbps speed long span optical communication transmitting device according to claim 1, it is characterized in that: described 10Gbps electro-absorption modulation transmitter module comprises Electroabsorption Modulated Laser, biasing circuit, drive circuit, data clock recovery CDR, MCU, Electroabsorption Modulated Laser is connected with biasing circuit, drive circuit respectively, and data clock recovers CDR and is connected with drive circuit, MCU respectively.
3. 2.5Gbps speed long span optical communication transmitting device according to claim 2, is characterized in that: described Electroabsorption Modulated Laser loads 2.5Gbps signal.
4. 2.5Gbps speed long span optical communication transmitting device according to claim 2, is characterized in that: described Electroabsorption Modulated Laser is selected EA to modulate TOSA or EA and modulated butterfly encapsulated laser.
5. 2.5Gbps speed long span optical communication transmitting device according to claim 1 and 2, it is characterized in that: described SBS suppression module is shake control module, shakes control module and is connected with the biasing circuit in 10Gbps electro-absorption modulation transmitter module, MCU respectively.
6. 2.5Gbps speed long span optical communication transmitting device according to claim 1, is characterized in that: described dither signal comprises square wave, trapezoidal wave, triangular wave, sine wave.
7. 2.5Gbps speed long span optical communication transmitting device according to claim 1 and 2, it is characterized in that: described 2.5Gbps Optical Receivers comprise connect successively 2.5G PIN, recover CDR across resistance amplification module, limited range enlargement module, data clock, data clock recovers the MCU connection in CDR and 10Gbps electro-absorption modulation transmitter module.
8. 2.5Gbps speed long span optical communication transmitting device according to claim 1, is characterized in that: the SBS threshold value that described image intensifer exports light reaches 19dBm-21dBm.
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| CN201510082677.9A CN104702337A (en) | 2015-02-15 | 2015-02-15 | 2.5 Gbps-speed long-span optical communication transmission device |
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| CN201510082677.9A CN104702337A (en) | 2015-02-15 | 2015-02-15 | 2.5 Gbps-speed long-span optical communication transmission device |
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| US20040156643A1 (en) * | 2003-02-11 | 2004-08-12 | Frederiksen Thomas R. | Optical transmitter with sbs suppression |
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Inventor after: Li Lue Inventor before: Yao Zhiqiang |
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Effective date of registration: 20160309 Address after: 214028 Wuxi New District Science and Technology Industrial Park, Jiangsu, No. 93 -C block Applicant after: Wuxi Zhongxing Optoelectronics Technology Co., Ltd. Address before: 214000, room 2, building 301, Zhongguancun Software Park, Wuxi New District, Wuxi, Jiangsu Applicant before: Wuxi City Zhong Xin optical communication technique Co., Ltd |
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Application publication date: 20150610 |