A novel design of long-period grating filters

Author

Guan, Bai-Ou ; Zhang, A-Ping ; Tao, Xiao-Ming ; Chan, Helen L.W. ; Choy, Chung-Loong ; Tam, Hwa-Yaw ; Suleyman, M.

Author_Institution

Dept. of Appl. Phys., Hong Kong Polytech. Univ., Kowloon, China

fYear

2002

fDate

17-22 Mar 2002

Firstpage

674

Lastpage

675

Abstract

A novel LPG structure, step-changed LPG, has been investigated theoretically and experimentally. The step-changed LPGs were fabricated using a two-step UV-beam scanning technique. The spectral characteristics of this type of LPG were simulated by numerically solving the coupled-mode equations and the results obtained from the simulation shown good agreement with the measurement spectra. It has been shown that the spectral profile of such LPG can be tailored by adjusting the step parameters and this property has potential applications in EDFA gain-flattening.

Keywords

coupled mode analysis; diffraction gratings; optical communication equipment; optical design techniques; optical fibre fabrication; optical fibre filters; optical scanners; EDFA gain-flattening; LPG structure; coupled-mode equations; long-period grating filter design; measurement spectra; optical fibre grating filters; spectral characteristics; step parameters; step-changed LPG; two-step UV-beam scanning technique; Attenuation; Clothing; Erbium-doped fiber amplifier; Fabrication; Fiber gratings; Fiber lasers; Filters; Optical attenuators; Packaging; Textiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002

Print_ISBN

1-55752-701-6

Type

conf

DOI

10.1109/OFC.2002.1036640

Filename

1036640