Title: High speed optic fiber grating wavelength demodulating system
Application Number: 200610124955 Application Date: 2006.11.07
Publication Number: 1987368 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D5/353;G02B6/34
Applicant(s) Name: Wuhan Univ. of Science and Engineering Address:
Inventor(s) Name: Jiang Desheng;Wen Hongqiao
Attorney & Agent: wangyu hua
Abstract:
    The system is composed of lithium niobate electro-optical switch, coupler, triangle filter of optical fiber grating, optical detector, and processor. Being switched by passing through electro-optical switch, wavelength signals to be modulated enter into each triangle filter of optical fiber grating in turn. Sensed signals inside range of reflectance spectrum of triangle filter of optical fiber grating are reflected and converted to change of wavelength. After passing through corresponding coupler, the reflected wavelength signals are received by each optical detector, and entered to processor finally. Based on change of light intensity, the processor predicts the magnitude of change of wavelength. By using combination between electro-optical switches in high speed and triangle filter of optical fiber grating implement modulation of wavelength in high speed. Increasing number of triangle filter of optical fiber grating can realize modulating wavelength in larger range.
Time: 7
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