ERM-202
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ERM-202 - 1

Polarization Extinction Ratio Meter ERM-202 The ERM-202 is a dual channel polarization extinction ratio (PER) meter specifically designed to simultaneously measure the PER and power ratio of a device with two polarization maintaining (PM) outputs, such as a Y-branch fiber gyro IOC, PM coupler (PMC), or polarization beam splitter (PBS), as well as evaluate the performance (output DOP) of depolarizers. A lower-cost single-channel version, which can later be upgraded to dual-channel, is also an option. An analog electrical PER output for each channel is available to enable feedback control of automated PM fiber alignment machines. With a PER dynamic range of 50 dB and an angular resolution of 0.06°, this instrument outperforms all competitors in its class. Its bright graphic OLED display allows information to be comfortably seen at large viewing angles and at a distance. The instrument has 4 measurement speeds ranging from 0.1 to 1 second/cycle, with the high speed for live alignment and the low speed for accuracy. PER, axis angle, power ratios, and optical power are automatically measured and displayed on the OLED screen. The measurement data can also be stored and recalled at the touch of a button for comparison purposes. The ERM202 is ideal for PM fiber pigtailing of modulators, waveguides, and laser diodes, as well as for PMC and PBS manufacturing, PM fiber connectorization, depolarizer characterization, PM fiber fusion splicing, PM fiber coil production and quality assurance for fiber gyros. General Photonics Corp. 5228 Edison Ave. Chino, CA 91710 Tel: 909.590.5473 Fax: 909.902.5536 Calibrated Wavelengths IOC PER & coupling ratio tests PMC & PBS PER & coupling ratio tests Angular Accuracy Power Measurement Accuracy Power Resolution Input Optical Power Range Simultaneous PER & power ratio testing Measurement Speeds 0.1, 0.2, 0.4, 1 seconds (Single channel version also has 10s measurement speed and manual polarizer control mode) Free space adapter for FC connector High angular resolution Optical Power Damage Threshold Store and recall functions Operating Temperature Storage Temperature Front Panel Display OLED graphic display Communication Interfaces Analog Output 0~5V PER analog output voltage via BNC for each channel Power Supply 0 ~ 50 dB for input power of −5 to 10 dBm 0 ~ 30 dB for input power >−25 to −5 dBm Angular Resolution Website: www.generalphotonics.com Email: info@generalphotonics.com 2U 19” half rack width 14” (L) x 8.5 “ (W) x 3.5” (H) Other wavelength ranges and connector types may be available. Other calibrated wavelengths available. For measurement at or slower than 0.4 s/cycle Laser diode PM fiber pigtailing PM fiber patch cord production PM fiber fusion splicing QA PM fiber coil and fiber gyro QA monitoring/measurement Unique Features: Bright OLED display Ordering Information: ERM – 202 – X Channel option 1 = Single channel 2 = Dual channel

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