Abstract

We investigate new types of mode recouplings in a concatenated grating structure comprising a long-period grating and a fiber Bragg grating. It is demonstrated that the light coupled out to the cladding mode by one of these gratings can be recoupled back to the guided mode by the other grating. Theoretical analysis based on the coupled-mode theory is presented, together with experimental results.

© 2002 Optical Society of America

Mode recoupling in a novel Bragg grating pair

A. Ping Zhang, Hwa-Yaw Tam, and Xiao-Ming Tao
Opt. Lett. 28(7) 519-521 (2003)

Band-selection filters with concatenated long-period gratings in few-mode fibers

Siddharth Ramachandran, Samir Ghalmi, Zhiyong Wang, and Man Yan
Opt. Lett. 27(19) 1678-1680 (2002)

Core-cladding mode coupling and recoupling in photonic crystal fiber for enhanced overlap of evanescent field using long-period gratings

Zonghu He, Yinian Zhu, Jiří Kaňka, and Henry Du
Opt. Express 18(2) 507-512 (2010)

Spectral polarization-dependent loss of cascaded long-period fiber gratings

Byeong Ha Lee, Jaehee Cheong, and Un-Chul Paek
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Analysis of a widely tunable long-period grating by use of an ultrathin cladding layer and higher-order cladding mode coupling

Kun-Wook Chung and Shizhuo Yin
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