Fiber inline core-cladding-mode interferometer fabricated by CO2 laser irradiation

Tao Wei; Xinwei Lan; Yinan Zhang; Hai Xiao

doi:10.1117/12.818624

29 April 2009 Fiber inline core-cladding-mode interferometer fabricated by CO₂ laser irradiation

Tao Wei, Xinwei Lan, Yinan Zhang, Hai Xiao

Proceedings Volume 7322, Photonic Microdevices/Microstructures for Sensing; 732203 (2009) https://doi.org/10.1117/12.818624
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

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.

Citation Download Citation

Tao Wei, Xinwei Lan, Yinan Zhang, and Hai Xiao "Fiber inline core-cladding-mode interferometer fabricated by CO₂ laser irradiation", Proc. SPIE 7322, Photonic Microdevices/Microstructures for Sensing, 732203 (29 April 2009); https://doi.org/10.1117/12.818624

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