All-optical dispersion monitor based on optical parameter amplifier

An optical amplifier and amplifier technology, which is applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of insufficient sensitivity to optical signal dispersion changes, large system power consumption and volume, and low output signal contrast, and achieve signal rate and modulation format The effects of transparency, high output signal contrast, and wide working band

CN101841368AInactive Publication Date: 2010-09-22HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2010-09-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an all-optical dispersion monitor based on an optical parameter amplifier. The all-optical dispersion monitor comprises a semiconductor laser, a coupler, the optical parameter amplifier, an output optical filter and an optical power meter. The semiconductor laser emits low-power continuous detection light. The continuous detection light and signal light are combined through the coupler and are filled into the optical parameter amplifier. The optical parameter amplifier is based on first-order four-wave mixing effect which causes energy to be transferred to detection waves and idle waves from the signal light. The detection waves and the idle waves with exponential gains are output, pass through the output optical filter and are measured by the optical power meter. The invention has the advantages that the response speed is fast, the sensitivity is high, the working waveband is wide, the signal rate and the modulation format are transparent, the monitor can be used for the dispersion monitoring of a WDM system with single channel rate above 100Gb/s, the high-speed photoelectric device and the signal processing circuit are not required during measurement, and the cost of devices is reduced.
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