Inline Mach-Zehnder interferometer using liquid filled twin-core photonic crystal fiber with high strain sensitivity.

Khurram Naeem; Bongkyun Kim; Jihee Han; Youngjoo Chung

doi:10.1117/12.975174

7 November 2012 Inline Mach-Zehnder interferometer using liquid filled twin-core photonic crystal fiber with high strain sensitivity.

Khurram Naeem, Bongkyun Kim, Jihee Han, Youngjoo Chung

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842179 (2012) https://doi.org/10.1117/12.975174
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

An inline Mach-Zehnder interferometer (MZI) is demonstrated using liquid filled twin-core photonic crystal fiber (TCPCF). The TC-PCF is filled selectively with liquid ethanol, increasing the effective refractive index contrast between twin cores, resulting in interference fringe spectrum with narrower free spectral range (FSR). Strain induced wavelength shift of the interference fringes is experimentally monitored. Wavelength shifts to the shorter wavelength side with a sensitivity of about -1.48 pm/με for applied strain change. Selectively liquid filled TC-PCF based MZI is simple to fabricate and expected to have wide range of applications in optical sensors, multi-wavelength laser source and tunable optical devices.

Citation Download Citation

Khurram Naeem, Bongkyun Kim, Jihee Han, and Youngjoo Chung "Inline Mach-Zehnder interferometer using liquid filled twin-core photonic crystal fiber with high strain sensitivity.", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842179 (7 November 2012); https://doi.org/10.1117/12.975174

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