11 March 2013 Versatile chemical molecule sensing using multi-wavelength fiber laser based on inter-core interference in twin-core photonic crystal fiber
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Proceedings Volume 8621, Optical Components and Materials X; 86210J (2013) https://doi.org/10.1117/12.2005356
Event: SPIE OPTO, 2013, San Francisco, California, United States
Abstract
We propose and experimentally demonstrate a new chemical molecule sensing scheme using multi-wavelength fiber laser based on inter-core interference in twin-core photonic crystal fiber. In our proposed multi-wavelength fiber laser, two separated cores are integrated in a single photonic crystal fiber and surrounded by air channels. The anti-symmetrical super-modes participate in inter-core interference, which leads to the formation of twin-core photonic crystal fiber-based wavelength-selective comb filter. Most of the evanescent waves are localized in the 13 air channels around the two integrated cores, where light-matter interaction takes in place. The presence of chemical molecules in the air channels of TC-PCF leads to perturbation of the inter-core effective index difference between the two propagating core modes and the associated lasing wavelength shift.
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Bongkyun Kim, Bongkyun Kim, Khurram Naeem, Khurram Naeem, Jihee Han, Jihee Han, Youngjoo Chung, Youngjoo Chung, } "Versatile chemical molecule sensing using multi-wavelength fiber laser based on inter-core interference in twin-core photonic crystal fiber", Proc. SPIE 8621, Optical Components and Materials X, 86210J (11 March 2013); doi: 10.1117/12.2005356; https://doi.org/10.1117/12.2005356
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