Vertical forward coupler based channel-dropping photodetector
- 7 March 1994
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (10) , 1201-1203
- https://doi.org/10.1063/1.110889
Abstract
We demonstrated an integrated channel-dropping photodetector in which a desired wavelength channel of the optical power is selectively coupled to a detector element. Based on a codirectionally grating-coupled GaAs/AlGaAs filter structure, a 1.2-nm-wide photocurrent response was obtained in an 800-nm-wavelength region with a device length shorter than 1 mm. Light passing through the device exhibited an alternate notch response, promising not to terminate the unselected channels.Keywords
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