Integrated Fiber-Optic Coupler.
Annual rept. Jun 85-Jun 86,
COLUMBIA UNIV NEW YORK DEPT OF ELECTRICAL ENGINEERING
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This report describes a silicon photodetector structure exhibiting real-estate efficient coupling of optical fibers to semiconductors. The integrated fiber-optic coupler employs a vertical insertion of a tapered single-mode fiber into a laser-etched cylindrical hole is a semiconductor substrate. It features a small surface footprint, mechanical stability, and accurate alignment. The p-n junction detectors have typically shown responsivities of 0.23 AW at 0.63 micron, corresponding to a quantum efficiency of 45 percent, and dark currents below 1nA. Author
- Solid State Physics