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Optical Engineering

Tunable chirped fiber Bragg gratings by a distributed heater
Author(s): Zhihao Chen; Chao Lu; Junhong Ng; Xiufeng Yang; Tee Hiang Cheng
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Paper Abstract

We propose a new design for introducing a tunable chirp on a uniform fiber Bragg grating by a controllable temperature gradient. The device consists of an unchirped Bragg grating in a bare fiber that is mounted in a plastic sleeve whose surface is coiled with a length of wire heater. The desired temperature distribution produces a chirp on the grating and at a rate that can be adjusted by varying the current. We demonstrate an electrically tunable chirped fiber Bragg grating that enables a tuning range of an average chirp rate up to 0.93 nm/cm with an electrical power of 3.3 W. We also demonstrate a tunable chirped fiber Bragg grating in which dispersion is adjustable from -1632 to -667 ps/nm with an electrical power of less than 0.5 W.

Paper Details

Date Published: 1 July 2001
PDF: 2 pages
Opt. Eng. 40(7) doi: 10.1117/1.1382642
Published in: Optical Engineering Volume 40, Issue 7
Show Author Affiliations
Zhihao Chen, Nanyang Technological Univ. (United States)
Chao Lu, Nanyang Technological Univ. (Singapore)
Junhong Ng, Nanyang Technological Univ. (Singapore)
Xiufeng Yang, Nanyang Technological Univ. (Singapore)
Tee Hiang Cheng, Nanyang Technological Univ. (Singapore)

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