Optical Fiber Sensor Based on a Radio Frequency Mach-Zehnder Interferometer
This Letter proposes an optical fiber radio frequency (RF) Mach-Zehnder interferometer (MZI) for sensing applications. An RF modulated laser source is injected into an optical fiber RF-MZI and collected by a photodiode. The interference pattern is observed in the RF domain by sweeping the frequency using a network analyzer. The proposed sensor has a linear response to applied temperature change. In addition, the sensitivity, observation frequency range, and the length of the sensing arm are discussed.
T. Wei et al., "Optical Fiber Sensor Based on a Radio Frequency Mach-Zehnder Interferometer," Optics Letters, vol. 37, no. 4, pp. 647-649, Optical Society of America, Feb 2012.
The definitive version is available at http://dx.doi.org/10.1364/OL.37.000647
Electrical and Computer Engineering
National Energy Technology Laboratory (U.S.)
Keywords and Phrases
Fiber-radio; Frequency ranges; Interference patterns; Linear response; Modulated lasers; Network analyzer; Optical fiber sensor; Radio frequencies; Sensing applications; Sensing arm; Temperature changes, Composite structures; Mach-Zehnder interferometers; Optical fibers, Radio waves
International Standard Serial Number (ISSN)
Article - Journal
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