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Optical Engineering

In-line fiber optic polarimeter with a 99% coupler
Author(s): Bernhard Scholl; Thomas Stein; Arndt Neues; Konrad Mertens
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Paper Abstract

A polarization transformer in combination with a polarization analyzer is well suited for the generation of any wanted polarization state. We describe the setup, calibration, and applications of an in-line fiber optic polarization detector (IPD) built with a fiber optic coupler of 99% coupling ratio. At the low power output port we use standard beamsplitters and polarizers to generate four different polarization dependent signals. For calibration, the polarization is measured at the high-power output port with an oft-line polarimeter (OPD). This enables the determination of the system matrix, which represents the relation between the polarization at the high-power port and the four signals at the low-power port. With this system matrix, a continuous and accurate determination of the polarization at the high-power output port is possible.

Paper Details

Date Published: 1 June 1995
PDF: 4 pages
Opt. Eng. 34(6) doi: 10.1117/12.202088
Published in: Optical Engineering Volume 34, Issue 6
Show Author Affiliations
Bernhard Scholl, Technical Univ. of Aachen (Germany)
Thomas Stein, Aachen Univ. of Technology (Germany)
Arndt Neues, Aachen Univ. of Technology (Germany)
Konrad Mertens, Institut fuer Hochfrequenztechnik (Germany)

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