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Regulation device and method of implementing sideband balance in optical transmission system

An adjustment device and optical transmission technology, applied in transmission systems, electromagnetic wave transmission systems, optics, etc., can solve problems such as the influence of the reliability of the transmission signal and the complexity of the method, and achieve the effect of system reliability guarantee and performance improvement

Inactive Publication Date: 2011-08-10
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is more complicated and affects the reliability of the transmitted signal in the optoelectronic system

Method used

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  • Regulation device and method of implementing sideband balance in optical transmission system
  • Regulation device and method of implementing sideband balance in optical transmission system
  • Regulation device and method of implementing sideband balance in optical transmission system

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The optical transmission system for realizing the automatic adjustment of the center frequency of the carrier signal of the present invention is applicable to a single-wavelength optical transmission system; it can also be applied to a multi-wavelength multiplexed optical transmission system, and the device is applied to one or more optical channels.

[0025] A sideband balanced optical transmission system that eliminates the influence of OMU / ODU transmission effects by using an electrical receiving method, consisting of a laser (1), a modulator (2), an optical device or system (OMU / ODU) (3), a receiver (4), A sideband filter (5), a sideband power comparison and feedback controller (6) are formed. In the figure, S1, S2, ..., SN are signals to be modulated sent from users.

[0026] The laser (1) is an optical generating unit with a wav...

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PUM

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Abstract

The invention discloses adjusting device and method realizing sideband balance in a light transmission system. The invention aims at realizing the adjustment of the sideband balance and assuring reliability of transmission signals in photo-electrical transmission system. The device includes: a laser, a modulator, an optical device, a receiver, a signal processor and a sideband power comparison and feedback controller. The method includes: (1) Sideband power detection on the signal is carried out, and a comparison whether the powers of the two sideband are equal or not is implemented; (2) if the powers are equal and difference value is below threshold value, a termination happens; if the powers are not equal or the difference value is above the threshold, a frequency of a carrier wave signal is adjusted. The invention has capacity of adjusting light performance, and realizes automatic control of the sideband balance, and improves the performance of the light signal, furthermore, reliability of the system is assured.

Description

technical field [0001] The invention relates to the field of optoelectronic equipment, in particular to an adjusting device and method for sideband balance in an optical transmission system. Background technique [0002] In an optical intensity modulation system, the unbalanced sidebands during optical signal reception may degrade the received signal performance. The invention solves the problem of unbalanced sidebands caused by transmission and optical filters in the process of optical transmission, or unbalanced sidebands caused by transmitter light wavelength drift. It can be applied to various fields with optical signal modulation, such as telecommunication optical transmission system, medical equipment system, industrial automation optical detection system, etc., but not limited to the above systems. [0003] In the optoelectronic system, there are many factors that affect the sideband balance of the optical signal, resulting in a decrease in the performance of the sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/12G02F1/00H04B10/294
Inventor 赵迺智高睿新
Owner ZTE CORP