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Polarization Extinction Ratio Meter

Reference: GPC-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.

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Polarization Extinction Ratio Meter
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.
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Alexandre Besson
Business Unit Director
+33 5 57 10 92 84
a.besson@laser2000.fr

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Product description

PER Meter by General Photonics

The PER Meter ERM-202 is a dual channel instrument for measuring the Polarization Extinction Ratio (Polarization Extinction Ratio PER). The second input can be PER and measuring the optical power level on components with two PM outputs in parallel. The PER Meter ERM-202 is therefore very well suited for integrated optical chips (IOC) with Y-coupler as used in fiber gyroscopes, PM coupler (PMC) and polarization beam splitter (PBC / S).

Optionally, a single-channel solution is available which can be retrofitted to 2 channels.

For each channel of the ERM-202 there is an analogue output which provides the PER measurement signal as voltage level provides. This allows the design of a control loop to automate the alignment of PM fibers.

The PER Meter ERM-202 is characterized by its large PER dynamic range of 50 dB, an angular resolution of 0.06 ° and its brilliant and high-contrast OLED display.

The instrument has 4 measuring speeds from 0.1 to 1 s / measuring cycle. PM fiber can be in the fast Align measurement mode in real time. For very accurate measurement results, the measurement time can be extended. PER, axis angle, Power level and power quotient are automatically measured and displayed in parallel on the OLED.

The PER Meter ERM-202 is an optimal solution for aligning PM fiber pigtails especially in PM fiber pigtail assembly on optical modulators, PM waveguide structures, laser diodes, fiber optic PM components such as PM coupler and beam splitter, PM fiber plug assembly, characterization of depolarizers, alignment of PM fibers before splicing, production of PM fiber coils and fiber gyroscopes.

Properties of PER Meter

Two measuring inputs
Simultaneous measurement of the PER and measurement of the power ratio
PER measuring range> 50 dB
High Contrast OLED Display
High angular resolution

PER Meter Applications

IOC PER and measuring the coupler division ratio
PMC and PBS PER and measurement of the coupler division ratio
Laser diode PM fiber pigtailing
PM patch cord assembly
Align PM fibers before splicing
Quality assurance in the production of PM fiber coils and fiber gyroscopes

PER Meter Specifications

Wavelength Range	1260 to 1650 nm
Calibrated Wavelengths²	1550 and 1310 nm
PER Dynamic Range	>50 dB
PER Measuring Ranges³	0 ~ 50 dB for Input Power from -5 to 10 dBm 0 ~ 30 dB for Input Power from -25 to -5 dBm
PER Resolution	0.1 dB
PER Accuracy	± 0.15 dB for ER <30 dB
Angular Resolution	0.06 °
Angular Accuracy	± 1 °
Performance Measurement Accuracy	± 0.5 dB
Resolution of the Power Measurement	0.02 dBm (PER < 30 dB) 0.2 dBm (PER > 30 dB)
Input Power Measuring Range	-30 dBm to 10 dBm
Measurement Speed	0.1, 0.2, 0.4, 1 s/Polariserrotationszyklus One Channel Version also has a 10s Measurement Cycle and a Manual Polarizer Control Mode
Connectors	Free space Adapter for FC Plug
Max. Optical Input Power	300 mW
Operating Temperature Range	0 bis 40° C
Storage Temperature Range	-20° C bis 60° C
Display	OLED Display
Interfaces	USB, RS-232, Ethernet, GPIB
Analoger Ausgang	0 - 5V PER analog Output Voltage for each Channel
Power Supply	100-240 V AC, 50-60 Hz
Dimensions	2U 19" half rack width, 14"(L) x 8.5"(W) x 3.5"(H)