The Whitaker Corporation

Hatem Abdelkader

Paul R Reitz

Terry P Bowen

Hongtao Han

Robert A Boudreau

Narinder Kapany

The present invention relates to a tuneable ring laser with an output having a fixed, stable linear state of polarization with a fixed and known azimuth. The state of polarization at the output is fixed by compensating for component birefringence of the various ring elements that alter the polarization state and azimuth.

Polarization controlled tuneable ring laser

A planar hybrid optical amplifier is fabricated on a single crystal substrate. The components that are common to a variety of optical amplifier circuits are mounted on the substrate and the planar device that results is readily interchanged in various applications. In one embodiment the multiplexed signal consisting of light from a pump laser and an optical signal are introduced into a rare earth doped fiber which amplifies the input signal through stimulated emission of radiation.

Planar hybrid optical amplifier

The present invention relates to a tuneable ring laser with an output having a fixed, stable linear state of polarization with a fixed and known azimuth. The state of polarization at the output is fixed by careful splice and component orientation that compensates for component birefringence of the various ring elements that alter the polarization state and azimuth. Further, such polarization transformation is minimized by careful deployment of the non-polarization component.

Growing community of inventors

Harrisburg, PA, United States of America

Hatem Abdelkader