Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2007-10-22
2009-02-17
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038100, C372S038070, C372S043010
Reexamination Certificate
active
07492800
ABSTRACT:
A high speed optical channel including an optical driver and a photodetector in a CMOS photoreceiver. The optical channel driver includes a FET driver circuit driving a passive element (e.g., an integrated loop inductor) and a vertical cavity surface emitting laser (VCSEL) diode. The VCSEL diode is biased by a bias supply. The integrated loop inductor may be integrated in CMOS technology and on the same IC chip as either/both of the FET driver and the VCSEL diode. The photodetector is in a semiconductor (silicon) layer that may be on an insulator layer, i.e., SOI. One or more ultrathin metal electrodes (<2000 Å) on the silicon layer forms a Schottky barrier diode junction which in turn forms a quantum well containing a two dimensional electron gas between the ultrathin metal electrode and the Schottky barrier diode junction.
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Bozso Ferenc M.
Emma Phillip G.
International Business Machines - Corporation
Law Office of Charles W. Peterson, Jr.
Nguyen Dung T
Percello, Esq. Louis J.
Verminski, Esq. Brian P.
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