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20 or 40 Gb/s Commercial DPSK Signal Reception
tap ratio: 60/40
Testing Instrument
The coupler is a 1x2 980 nm 05/95 single window coupler
tap ratio: TERM
3 Paddle Mechanical Polarization Controller Fiber Optic Isolator with SM Fiber 20 or 40 Gb/s Commercial3 paddle mechanical polarization controller is using fiber outside pressure and birefrigent effect theory. Its 3 Paddle is respectively equal 4 2 4 plate. When light wave enters 4 waveplate is transfer line polarization, then use 2 is adjust polarization direction, finally it enters to 4 waveplate and line polarization state is change to any polarization. Due to Birefrigents delay effect is come from fiber cladding, roll fiber, and wavelength. It can
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