Lucent Technologies Inc.

Triquint Technology Holding Co.

Alexandru Paunescu

Keith Wayne Goossen

John William Osenbach

James Albert Walker

Dennis Stanley Greywall

Jane Deborah LeGrange

John V Gates, Ii

Linda M Braun

Mark Karnacewicz

An optical wire board which utilizes a silicon substrate as the base for both the optical subassembly and the electrical RF transmitting circuit. An optical fiber is preferably passively aligned to the active optical device mounted on the optical subassembly using a V-groove etched into the silicon (and may include a lens or other optical element positioned between the fiber and the active device). An integrated circuit for coupling the active optical device to external contacts is preferably flip-chip mounted to the silicon substrate upon pads disposed on precisely defined edges around a cavity etched beneath the circuit, the inclusion of the cavity beneath the electrical circuit functioning to minimize the dielectric loading effect of the silicon substrate on the integrated circuit.

Silicon-based high speed optical wiring board

In accordance with the invention, the optical power level in an optical waveguide is monitored by enclosing a length of the waveguide within an insulated cavity of comparable length and cross section, measuring a first temperature T within the cavity, measuring a second temperature T outside the cavity and deriving from the difference, T &minus;T , a measure of the optical power level. Exemplary apparatus for monitoring the optical power level in an optical waveguide comprises a substrate with an insulated groove for receiving an optical fiber, an insulated lid for sealing the fiber within the groove, and internal and external temperature sensors.

Method and apparatus of monitoring optical power level in waveguiding structures

An article and method including an optical fiber coupled to a microstructure which is easily manufactured. The microstructure is comprised of a plurality of layers including a receptacle layer and a movable layer. The optical fiber has a high reflectivity terminal end forming the non-movable layer. The receptacle layer has an opening aligned with the movable layer for receiving the terminal end of the optical fiber. The optical fiber is inserted into the opening and the receptacle layer and fixed in relation to the microstructure, so as to form cavity between the terminal end of the fiber and the movable layer of the microstructure. The movable layer is physically adapted for moving relative to the non-movable layer under the influence of an actuating force. Additionally a method of manufacture of forming a microstructure comprising a receptacle layer having an opening therein and a movable layer, inserting a terminal end of an optical fiber into the opening, and affixing the optic fiber to the microstructure.

Optical microstructure and method of manufacture

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Neshanic Station, NJ, United States of America

Alexandru Paunescu