MZI-based wavelength-shift detection system with tunable FBG

Zhiguo Zhang; Fugen Su; Min Zhang; Peida Ye

doi:10.1117/12.685304

4 October 2006 MZI-based wavelength-shift detection system with tunable-FBG

Zhiguo Zhang, Fugen Su, Min Zhang, Peida Ye

Proceedings Volume 6351, Passive Components and Fiber-based Devices III; 635134 (2006) https://doi.org/10.1117/12.685304
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

Proposed and demonstrated in this letter is a scheme of fiber Bragg grating (FBG) sensor interrogation system based on all fiber Mach-Zehnder Interferometer (MZI) edge filter and tunable-FBG, of which the Bragg period is tunable through a one-dimensional adjustor. Wavelengths message of FBG sensor and the tunable-FBG are transformed into powers message by a pair of the filtering edges of the filter, respectively; and the wavelength difference between the FBG sensor and the tunable-FBG can be obtained through differing the two pairs powers message. In measured experiments, the results show that the precision of the proposed system is 0.02nm in a range of 1nm. The wavelength measurement range can be improved by adjusting the length difference of the two interference arms of the filter.

Citation Download Citation

Zhiguo Zhang, Fugen Su, Min Zhang, and Peida Ye "MZI-based wavelength-shift detection system with tunable-FBG", Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 635134 (4 October 2006); https://doi.org/10.1117/12.685304

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