Fiber Inline Core-cladding-mode Interferometer Fabricated by CO₂ Laser Irradiation
Fiber inline core-cladding-mode interferometers (CCMI) fabricated by CO2 laser irradiations were demonstrated. CCMI sensors operate based on the interference between the core mode and the cladding modes. Based on the way the interferometer is configured, CCMI sensors can be categorized into two groups, namely the Mach-Zehnder interferometer (MZI) type and the Michelson interferometer (MI) type. The MZI sensor works in transmission mode, i.e., the transmitted interference signal is detected. The MI sensor works in reflection mode, where the light passes the interferometer twice and the reflected interference signal is detected. We conducted a temperature test and a refractive index test to demonstrate their sensing capability.
T. Wei et al., "Fiber Inline Core-cladding-mode Interferometer Fabricated by CO₂ Laser Irradiation," Proceedings of SPIE, SPIE, Apr 2009.
The definitive version is available at http://dx.doi.org/10.1117/12.818624
Electrical and Computer Engineering
Keywords and Phrases
Cladding Mode; Core Mode; Fiber Inline Core-Cladding-Mode Interferometers; Carbon dioxide
Article - Conference proceedings
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