✦ LIBER ✦

Design of broadband and arbitrary profile filters using large chirped fiber grating

✍ Scribed by Li Xia; Xuhui Li; Xiangfei Chen; Peng Wang; Shizhong Xie

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 87 KB
Volume: 39
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.11143

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✦ Synopsis

Abstract

A method is presented for designing and fabricating broadband and arbitrary profile filters using large chirped fiber grating. The relationship between grating reflectivity and chirp coefficient is discussed. By changing the ultraviolet (UV) light exposure dose along the grating, the complex refractive index modulation profile can be obtained. A broadband filter used for sensing with a linear reflectivity profile is produced through this method. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 115–117, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11143

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We have developed and demonstrated a novel technique to manufacture large bandwidth grating with a nearly arbitrary transmittivity profile. The technique is based upon scanning the large chirped phase mask and controlling of the reflective index modulation distribution along the grating length.