Abstract

A new type of mode recoupling in a Bragg grating pair, in which one of the gratings is written in the fiber cladding, is proposed to overcome limitations of concatenated long-period and fiber Bragg gratings reported earlier [Opt. Lett. 27, 1214 (2002)]. Its reflection spectrum is similar to that of the previously reported concatenated grating structure; however, the reflectivity can be much larger than the previous limitation of 50%. Furthermore, avoidance of the loss induced by a long-period grating makes such a Bragg grating pair more attractive for practical applications.

© 2003 Optical Society of America

Cladding-mode-assisted recouplings in concatenated long-period and fiber Bragg gratings

A-Ping Zhang, Xiao-Ming Tao, Weng-Hong Chung, Bai-Ou Guan, and Hwa-Yaw Tam
Opt. Lett. 27(14) 1214-1216 (2002)

Ultrasensitive long-period fiber gratings for broadband modulators and sensors

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Kun-Wook Chung and Shizhuo Yin
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