Wavelength tuning in a grating-assisted vertical coupler filter using quantum well electrorefraction
- 9 December 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (24), 3081-3083
- https://doi.org/10.1063/1.105795
Abstract
We present a demonstration of the electro-optic tuning in a GaAs/AlGaAs quantum well vertical codirectional coupler filter. Tunable range over 2 nm was realized through the quantum-confined Stark effect with a tuning rate of 0.28 nm/V2 for transverse magnetic polarization. A filter bandwidth as narrow as 1.7 nm (full width at half-maximum) at 830 nm with a coupling region length of 490 μm was obtained.Keywords
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