Tunable Mach-Zehnder polarization splitter using height-tapered Y-branches |
| |
| Authors: | M.H. Hu J.Z. Huang R. Scarmozzino M. Levy R.M. Osgood Jr. |
| |
| Affiliation: | Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA; |
| |
| Abstract: | A tunable TE/TM polarization splitter, based on a Mach-Zehnder interferometer with an electrooptic switch, is demonstrated in GaAs-AlGaAs. Symmetric and asymmetric Y-branches employing height-tapered waveguides are used to achieve power splitting and mode sorting, respectively, in the interferometer. The device has an extinction ratio of /spl sim/20 dB and an excess loss less than 1.5 dB for both TE and TM polarized light. The device can be reconfigured by tuning the switching voltage for operation at both 1.3- and 1.55-pm wavelengths. |
| |
| Keywords: | |
|
|
