Design of flat-top comb filter based on photonic crystal fiber Sagnac loop

Author

Wang, Xude ; Li, Suwen

Author_Institution

Sch. of Phys. & Electron. Inf., Huaibei Normal Univ., Huaibei, China

fYear

2011

fDate

13-16 Nov. 2011

Firstpage

1

Lastpage

7

Abstract

A novel all-fiber flat-top comb filter is proposed based on Sagnac loop interferometer of photonic crystal fiber (PCF). The transmission function of the proposed Sagnac loop filter is expressed theoretically by Jones transmit-matrix. The influences of birefringence of PCF, the lengths of two sections of PCFs and the rotatable angle of polarization controllers on its output spectra are numerically studied. On the basis of theoretical analysis, a wavelength switchable comb filter with flat-top spectral response is realized. This kind of filter can be expected to be used widely in DWDM systems in the future.

Keywords

Sagnac interferometers; birefringence; comb filters; holey fibres; optical design techniques; optical fibre filters; optical fibre polarisation; photonic crystals; Jones transmit-matrix; Sagnac loop filter; Sagnac loop interferometer; all-fiber flat-top comb filter; birefringence; flat-top spectral response; photonic crystal fiber; polarization controllers; rotatable angle; transmission function; wavelength switchable comb filter; Abstracts; Optical fiber communication; Optical fiber polarization; Optical filters; Optical polarization; Jones matrix; birefringence; comb filter; fiber loop mirror; fiber optics communication; interference; photonic crystal fiber;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Photonics Conference and Exhibition, 2011. ACP. Asia

Conference_Location

Shanghai

ISSN

2162-108X

Print_ISBN

978-0-8194-8961-6

Type

conf

DOI

10.1117/12.902736

Filename

6210620