Light amplifying polarizer

Details Light amplifying polarizer Light amplifying polarizer

1991-11-21

1993-03-30

Lee, John D.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

372 45, 359344, 385 11, H01L 2714

Patent

active

051989212

ABSTRACT:
A semiconductor light amplifier is driven by a drive device, and selectively amplifies one of a TM mode component and a TE mode component of input light. For example, TE mode light is selectively amplified by making thickness of the active layer of the semiconductor light amplifier not more than 0.05 .mu.m, or by tilting at least one of the entrance and exit faces of the semiconductor light amplifier by 10 to 16 degrees. An another type of light amplifying polarizer, input signal light and excitation light are combined by a half mirror or an optical coupler, and combined light is input to a rare-earth-element doped, polarization maintaining optical fiber.

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patent: 5012474 (1991-04-01), White et al.
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Way et al., "Applications of Traveling-Wave Laser Amplifiers in Subcarrier Multiplexed Lightwave Systems," IEEE Transactions on Microwave Theory and Techniques, vol. 38, No. 5, May 1990, pp. 534-545.
Besse et al., "Reflectivity Minimization of Semiconductor Laser Amplifiers with Coated and Angled Facets Considering Two-Dimensional Beam Profiles," IEEE Journal of Quantum Electronics, vol. 27, No. 6, Jun. 1991, pp. 1830-1836.
Saitoh et al., "Low Noise Characteristics of a GaAs-AlGaAs Multiple-Quantum-Well Semiconductor Laser Amplifier," IEEE Photonics Technology Letters, vol. 2, No. 11, Nov. 1990, pp. 794-796.

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