Huawei Technologies Co., Limited

Naisheng Zhang

Jun Luo

Changzheng Su

Tianhai Chang

Weishi Li

Qianjin Xiong

Yusheng Bai

Dianjun Xiao

Yuzhi Jin

Changgui Xiao

Xingyue Sha

Li Chen, Legal Representative

A method for stabilizing multi-channel optical signal wavelengths includes the following steps. A first detecting signal is stacked on a plurality of driving signals in sequence. A plurality of optical signals generated after being driven by the plurality of driving signals is combined into one optical total signal. A wavelength detection is performed on the optical total signal. A second detecting signal with a frequency band the same as that of the first detecting signal is extracted from the signals obtained after the wavelength detection. The wavelength of the optical signal in the corresponding channel among the multiple channels is controlled according to the second detecting signal. A device for stabilizing multi-channel optical signal wavelengths is also provided. Using the above method or device, the multi-channel optical signal wavelengths can be stabilized, which requires less elements, and has a simple circuit structure, a high integration level, and a low cost.

Method and device for stabilizing multi-channel optical signal wavelengths

An electro-optic conversion module () is disclosed, including: an electric interface unit () configured to receive multiple electric signals to be converted and transmit each electric signal to be converted to a corresponding electro-optic conversion unit (); electro-optic conversion units () configured to convert the electric signals from the electric interface unit () into optical signals; a multiplexer unit () configured to multiplex the optical signals from the electro-optic conversion units () into a wavelength division multiplexed signal; and an optical interface unit (). An optic-electro conversion module and the conversion methods are also disclosed in the present disclosure. With the electro-optic conversion module (), the optic-electro conversion module and the conversion methods of the present disclosure, the electro-optic conversions for multiple electric signals or the optic-electro conversions for multiple optical signals may be achieved in the same module.

Electro-optic conversion module, optic-electro conversion module and conversion methods thereof

The present invention discloses an optical communication system, a sub-rate multiplexing/de-multiplexing apparatus and the method thereof such that the optical communication system could meet the demand of Metropolitan Area Network (MAN) communications using the existing optical fiber network. This optical communication system includes an optical transmitting module and an optical receiving module connected by optical fibers, wherein the optical transmitting module is used for converting the inputted electrical signals into optical signals and transferring the optical signals to the optical receiving module via optical fibers, and the optical receiving module is used for converting the received optical signals into electrical signals and outputting the electrical signals. In the optical signals transferred by optical fibers, the data transmission rate of at least one wavelength is about 5 Gb/s. One or multiple optical amplifiers may be incorporated as well between the optical transmitting module and the optical receiving module.

Method, apparatus and system for optical communications

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Shenzhen, China

Naisheng Zhang