UV-written long-period gratings on polymer waveguides

Author

Lor, Kar Pong ; Liu, Qing ; Chiang, Kin Seng

Author_Institution

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

Volume

17

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

594

Lastpage

596

Abstract

We report an ultraviolet (UV)-writing technique for the fabrication of a long-period waveguide grating on a benzocyclobutene ridge waveguide coated with epoxy (UV 11-3), where the grating is formed by exposing the waveguide to 248-nm UV pulses emitted from a KrF excimer laser through an amplitude mask. The UV pulses produce both index modulation and corrugation on the epoxy cladding, and their combined effect gives rise to the observed transmission spectrum. We also highlight the effects of UV-induced nonuniformity along the grating by simulation and measure the temperature sensitivity of the resonance wavelength of the grating.

Keywords

claddings; diffraction gratings; excimer lasers; high-speed optical techniques; infrared spectra; laser materials processing; optical fabrication; optical films; optical filters; optical modulation; optical polymers; optical waveguide components; optical waveguides; ridge waveguides; ultraviolet radiation effects; 248 nm; KrF; KrF excimer laser; UV pulses; UV-induced nonuniformity; UV-writing technique; UV-written gratings; amplitude mask; benzocyclobutene waveguide; epoxy cladding; epoxy-coated waveguide; index modulation; long-period gratings; optical fabrication; optical waveguide filters; polymer waveguides; resonance wavelength; ridge waveguide; temperature sensitivity; transmission spectrum; Gratings; Optical device fabrication; Optical pulses; Polymers; Pulse modulation; Resonance; Temperature measurement; Temperature sensors; Waveguide lasers; Wavelength measurement; 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.2004.840918

Filename

1396025