Broadband-rejection filters using chirped and tilted fiber gratings

Fu Liu; Tuan Guo; Bai-Ou Guan

doi:10.1117/12.2072879

11 November 2014 Broadband-rejection filters using chirped and tilted fiber gratings

Fu Liu, Tuan Guo, Bai-Ou Guan

Proceedings Volume 9274, Advanced Sensor Systems and Applications VI; 92740D (2014) https://doi.org/10.1117/12.2072879
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Broadband-trimming band-rejection filters based on chirped and tilted fiber Bragg gratings (CTFBG) are proposed and experimentally demonstrated. The flexible chirp-rate and wide tilt-angle provide the gratings with broadband filtering functions over a large range of bandwidth (from 10 nm to 150 nm), together with a low transmission loss (less than 1 dB) and a negligible back-reflection (lower than 20 dB). The slope profile of CTFBG in transmission can be easily tailored by adjusting the tilt angle, grating irradiation time and chirp rate-grating factor, and it is insensitive to polarization of launch condition. Furthermore, by coating the CTFBG with a suitable polymer (whose refractive index is close to that of the cladding glass), the cladding modes no longer form weakly discrete resonances and leave a smoothly varying attenuation spectrum for high-quality band rejection filters, edge filters and gain equalizers.

Citation Download Citation

Fu Liu, Tuan Guo, and Bai-Ou Guan "Broadband-rejection filters using chirped and tilted fiber gratings", Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92740D (11 November 2014); https://doi.org/10.1117/12.2072879

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available