First Advisor

Lee W. Casperson

Date of Publication

1989

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Electrical Engineering

Department

Electrical Engineering

Language

English

Subjects

Polarization (Light), Laser communication systems, Liquid crystals -- Optical properties, Algorithms, Fiber optics

DOI

10.15760/etd.6029

Physical Description

1 online resource (50 p.)

Abstract

One of the obstacles to coherent fiber-optic communications is the unpredictable polarization drift which necessitates the use of an active polarization controlling system to match the polarizations of the signal and local oscillator. The polarization match must be maintained during the reset of any of the finite range components to prevent loss of data. We present a novel and practical system which uses three liquid crystal devices for the polarization matching process. Also, the required reset control algorithm and its derivation are described in detail.

Rights

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Comments

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Persistent Identifier

http://archives.pdx.edu/ds/psu/23814

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