Versatile chemical molecule sensing using multi-wavelength fiber laser based on inter-core interference in twin-core photonic crystal fiber

Bongkyun Kim; Khurram Naeem; Jihee Han; Youngjoo Chung

doi:10.1117/12.2005356

11 March 2013 Versatile chemical molecule sensing using multi-wavelength fiber laser based on inter-core interference in twin-core photonic crystal fiber

Bongkyun Kim, Khurram Naeem, Jihee Han, Youngjoo Chung

Author Affiliations +

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.

Citation Download Citation

Bongkyun Kim, Khurram Naeem, Jihee Han, and 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); https://doi.org/10.1117/12.2005356

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