American Telephone & Telegraph Co., At&t Bell Laboratories

Melvyn Dixon

Nils A Olsson

Liang D Tzeng

Robert E Tench

A polarization insensitive optical device is disclosed which is capable of providing direct optical amplification of an input signal of unknown (and possibly varying) polarization. A polarization diversity technique is utilized wherein a polarization beam splitter is used to divide the incoming signal into orthogonal components of known polarization (TE,TM). The orthogonal components are then separately amplified, using a semiconductor laser as the amplifying device. The amplified components are then recombined, either optically or electrically, to form the final output signal.

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Lower Macungie Township, PA, United States of America

Melvyn Dixon