Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1997-04-11
2000-07-11
Sanghavi, Hemang
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
385 2, 385 3, 359248, 372 50, G02B 610, G02F 103
Patent
active
060885009
ABSTRACT:
An electroabsorptive modulator (EAM) for providing RF modulation of optical inputs signals. The EAM is formed as a semiconductor waveguide on a semiconductor substrate with an optical input port and an optical output port and electrical contacts for connection to the RF input. The configuration of the waveguide portion of the EAM is optimized to provide a modal match with the particular optical device to which the EAM is to be connected, for example, an optical fiber. By optimizing the modal match between the EAM and the optical device to which the EAM is connected, the optical insertion losses are minimized thereby improving the overall performance of the optical system. The device is formed from a plurality of quantum wells selected to compensate for the increased mode field dimensions.
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Nichols Doyle T.
Zmudzinski Charles A.
Sanghavi Hemang
TRW Inc.
Yatsko Michael S.
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