Request InfoEXFO Inc.Exfo Inc. has added tools to its PSO-200 optical modulation analyzer, providing flexibility to manufacturers looking to adapt their testing protocols to future compliance procedures and allowing performance of phase-modulated transmitters such as dual-polarization quadrature phase-shift keying to be established independently of the receiver. The software release provides network equipment and transceiver manufacturers with tools for testing and troubleshooting during production of 40- and 100-Gb/s transmitters. 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