Very short integrated-optic Fabry-Perot cavity-coupler switch for DC and high bandwidth operation

Author

Nir, D. ; Ruschin, S.

Author_Institution

Dept. of Phys. Electron., Tel Aviv, Israel

Volume

28

Issue

11

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

2544

Lastpage

2550

Abstract

A novel integrated-optic coupling configuration if proposed. The device operation is based on the confinement of the coupling zone to the length of a very short Fabry-Perot cavity. The cavity is electrooptically coupled with a parallel outcoupling guide. By employing accurate lithographic techniques for the fabrication of milled integrated mirrors, with total lengths of the order of 5-10 μm, devices 100 to 200 μm long can be considered. These can perform full coupling operation at bandwidths in the range of many tens of gigahertz with typically a 12-15-dB extinction ratio. The same configuration can also be used for low-frequency switching, where an extinction ratio of >20 dB is expected. Calculated results are based on the parameters of Ti:LiNbO₃ waveguides supporting 1.53-μm wavelength TM mode

Keywords

directional couplers; electro-optical devices; integrated optics; lithium compounds; mirrors; optical couplers; optical switches; titanium; 1.53 micron; 100 to 200 micron; 5 to 10 micron; DC operation; Fabry-Perot cavity-coupler switch; LiNbO₃:Ti waveguides; TM mode; accurate lithographic techniques; directional coupler; electrooptically coupled; extinction ratio; fabrication; high bandwidth operation; integrated-optic coupling configuration; low-frequency switching; milled integrated mirrors; parallel outcoupling guide; very short Fabry-Perot cavity; Bandwidth; Electrodes; Extinction ratio; Fabrication; Fabry-Perot; Frequency; Microwave devices; Mirrors; Optical attenuators; Switches;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.161309

Filename

161309