High channel-count comb filter based on chirped sampled fiber Bragg grating and phase shift

Author

Dai, Yitang ; Chen, Xiangfei ; Xu, Ximing ; Fan, Chongcheng ; Xie, Shizhong

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

17

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1040

Lastpage

1042

Abstract

Based on strongly chirped sampled fiber Bragg grating and phase shifts, a novel approach to obtain high channel-count comb filters is proposed in this letter. Various channel spacing can be achieved by a single strongly chirped phase mask where the required phase shifts can be gained by a precise translation stage. Comb filters with channel spacing of 50, 100, and 200 GHz are then designed with the same phase mask. Experimentally, a 35-channel 100-GHz channel-spacing comb filter is fabricated, from which one can expect that high-performance comb filter with various channel spacing can be fabricated by conventional technology.

Keywords

Bragg gratings; channel spacing; chirp modulation; comb filters; optical communication equipment; optical design techniques; optical fabrication; optical fibre communication; optical fibre filters; 100 GHz; 200 GHz; 50 GHz; channel spacing; chirped phase mask; chirped sampled fiber Bragg grating; high channel-count comb filter; phase shift; Amplitude modulation; Bragg gratings; Channel spacing; Chirp modulation; Fiber gratings; Optical fiber filters; Phase modulation; Sampling methods; Space technology; Wavelength division multiplexing; Fiber gratings; optical fiber communication;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.846760

Filename

1424093