Band-rejection filter with widely tunable center wavelength and contrast using metal long-period grating on polymer waveguide

Author

Chiang, Kin Seng ; Chow, Chi Kin ; Liu, Qing ; Chan, Hau Ping ; Lor, Kar Pong

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, China

Volume

18

Issue

9

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1109

Lastpage

1111

Abstract

We demonstrate a widely tunable band-rejection filter using a metal long-period grating deposited directly on the cladding of a polymer waveguide. The contrast of the rejection band can be tuned by 28 dB with ∼45-mW electric power applied to the metal grating and the center wavelength can be tuned over the C+L-band with a temperature control of ∼40°C. The device can find applications as a tunable notch filter, a polarization-dependent loss compensator, or a variable attenuator.

Keywords

diffraction gratings; optical filters; optical polymers; optical tuning; optical waveguides; band-rejection filter; metal long-period grating; polarization-dependent loss compensator; polymer waveguide; tunable notch filter; variable attenuator; Buffer layers; Electrodes; Fiber gratings; Optical attenuators; Optical buffering; Optical fiber filters; Optical filters; Optical polymers; Optical waveguides; Temperature control; Long-period gratings; optical polymer waveguides; optical waveguide filters; optical waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.873958

Filename

1624503