Accession Number : ADA184494


Title :   Integrated Fiber-Optic Coupler.


Descriptive Note : Annual rept. Jun 85-Jun 86,


Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF ELECTRICAL ENGINEERING


Personal Author(s) : Prucnal,P R ; Fossum,E R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a184494.pdf


Report Date : Apr 1987


Pagination or Media Count : 29


Abstract : 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 A/W at 0.63 micron, corresponding to a quantum efficiency of 45 percent, and dark currents below 1nA. (Author)


Descriptors :   *COUPLERS , *FIBER OPTICS , *SEMICONDUCTORS , *SILICON , SUBSTRATES , N TYPE SEMICONDUCTORS , P TYPE SEMICONDUCTORS , QUANTUM EFFICIENCY


Subject Categories : Optics
      Solid State Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE