Method and apparatus for stabilizing multi-channel light wavelength

A multi-channel, optical wavelength technology, applied in the field of optical communication, can solve the problems of high cost, complex circuit, and many devices, and achieve the effect of fewer devices, high integration and simple circuit

Active Publication Date: 2007-06-06
HISILICON OPTOELECTRONICS CO LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Each laser requires a wavelength detector, which requires many devices, complex circuits, and high cost. The wavelength detector of each laser needs to have a single-channel filtering function

Method used

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  • Method and apparatus for stabilizing multi-channel light wavelength
  • Method and apparatus for stabilizing multi-channel light wavelength
  • Method and apparatus for stabilizing multi-channel light wavelength

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Embodiment Construction

[0022] In a multi-channel optical communication system, the multi-channel data is converted into a multi-channel drive signal by a laser driver to drive the multi-channel transmitter. In order to stabilize the multi-channel optical wavelength, the embodiment of the present invention includes the following idea: A detection signal is superimposed sequentially (multiple times), so the detection signal components are sequentially (time-division) carried in the wavelength signals of each channel; the detection signal components are sequentially extracted from the total optical signal after the wavelength signals of each channel of the multi-channel transmitter are combined. The signal component is detected, and the wavelength of the corresponding channel is controlled according to the extracted detection signal.

[0023] In order to further understand the embodiments of the present invention, the idea of ​​the embodiments of the present invention will be illustrated below with refe...

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Abstract

A method for stabilizing light wavelength of multi-channel includes generating the first detection signal with band different to multipath driving signal, superposing the first detection signal on multipath driving signal in sequence to obtain multipath light signal and a path of light general signal, carrying out wavelength detection on light general signal, picking up the second detection signal with band as the same with the first one in sequence from wavelength detection result and controlling light wavelength of relevant channel on multi-channel emitter as per obtained second detection signal.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a method and device for stabilizing multi-channel optical wavelengths. Background of the invention [0002] With the continuous development of communication services, the communication network has more and more requirements for transmission bandwidth; the optical signal of multiple wavelengths is synthesized into one signal (wavelength division multiplexing) and transmitted in the optical fiber, which is a very effective way to increase the transmission bandwidth. Methods. However, in a wavelength division system, especially a dense wavelength division system (such as a wavelength division system with a wavelength interval of less than or equal to 50 GHz), since the wavelength interval between adjacent channels is very narrow, the wavelength of each optical signal of wavelength division multiplexing has a high accuracy and stability requirements. [0003] According to the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/155H04B10/08H04B10/50H04B10/572
CPCH04B10/572H04B10/506
Inventor 白聿生张乃胜肖长贵
Owner HISILICON OPTOELECTRONICS CO LIMITED
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