JDS Uniphase Polarization Controllers provide an efficient way of creating any polarization state at any point along a single-mode fiber. The unit can be used as part of a polarization-state analyzer.
This controller provides more accurate polarization control than a simple fiber coil design. Changes to the state of polarization are produced by three optical elements: a high extinction ratio polarizer, a quarter-wave retardation plate, and a half-wave retardation plate. Each element can be controlled locally from the front panel or through the GPIB and RS232 interfaces. The polarization controller has two ports for in-line connection in a test system.The ports are equipped with connectorized fiber pigtails.
• Polarization sensitivity measurements in single-mode fiberoptic components
• EDFA signal-to-noise measurements
• Analysis of polarization state changes
• Compensation for changes in birefringence in systems
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