Santec PEM-340 - Introduction

Polarization Extinction Ratio Meter PEM-340
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Introduction
The PEM-340 Polarization Extinction Ratio Meter provides accurate, real-time information about
the polarization state of light in an optical ber. It can be used as a general purpose measuring
instrument but has been designed, in particular, to enable the accurate and rapid alignment of
polarization maintaining bers to optical components. The rotating polarizer design, coupled with a
high sensitivity detector enable the PEM-340 to measure high linear polarization extinction ratios, of
up to 50dB, with a 2.5Hz refresh rate.
The PEM-340 simultaneously displays values for polarization extinction ratio (PER), optical
power and polarization angle. These are the three critical parameters required for the alignment of
polarization maintaining ber to optical components. In addition, the PEM-340 has full support for
GPIB and RS-232C communication interfaces together with an analogue data output. These features
provide the unit with unrivalled exibility for integration into automatic measurement and automatic
ber alignment systems.
The PEM-340 is easy to use, but to obtain the most from your unit we recommend that you read
this manual fully and become familiar with its contents prior to operation. We hope that you will be
satised with your purchase.