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p santec PEM320 偏振消光比测试仪技术资料：The PEM-320 polarization extinction ratio (PER) meter has been designed to enable accurate and rapid alignment of optical components to polarization maintaining fiber. The PEM-320 incorporates a powerful GPIB interface enabling full system integration and production line automation. In addition, to facilitate automatic alignment of diode lasers to optical fibers, an analog power monitor with 1 kHz response time is available. With this addition, both translational and rotational fiber alignment can be controlled automatically.