Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1996-04-30
1998-01-06
Palmer, Phan T. H.
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
385 18, 385132, 257432, G02B 610
Patent
active
057063834
ABSTRACT:
A vertical cavity signal suppressor array having a plurality of suppressor elements, each of which incorporate therein an active semiconductor region bounded by reflective elements and a source of current 20 connected thereto. When in operation within a multichannel optical system a preselected signal suppressing element the signal suppressor array is turned "on" in the selected channel of interest. This is accomplished by either injecting a small current through the reflective elements or by optical pumping, and the desired signal channel is transmitted with little or no loss. All the non-selected channels remain undriven or "off", that is, a state in which they are strongly absorptive.
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Kleinfeld Jeffrey A.
Malcuit Michelle S.
Stone Thomas W.
Cohen Jerry
Erlich Jacob N.
Palmer Phan T. H.
Wavefront Research, Inc.
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