Birefringence control of silica waveguides on Si and its application to a polarization-beam splitter/switch
- Resource Type
- Periodical
- Authors
- Okuno, M.; Sugita, A.; Jinguji, K.; Kawachi, M.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 12(4):625-633 Apr, 1994
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Birefringence
Silicon compounds
Switches
Optical polarization
Switching circuits
Programmable control
Substrates
Stress control
Optical control
Fiber lasers
- Language
- ISSN
- 0733-8724
1558-2213
A novel polarization-beam splitter/switch with a Mach-Zehnder interferometer configuration was fabricated using a silica-based planar lightwave circuit (PLC) on a silicon substrate. The polarization-beam splitter/switch was realized by accurately controlling the waveguide birefringence and the phase state by laser trimming two kinds of stress-applying amorphous silicon film with widths of 50 /spl mu/m and 95 /spl mu/m. Fiber-waveguide-fiber insertion loss of 0.5 dB and crosstalk attenuations of over 25.6 dB were attained.ETX