Optical Modulation Analysis
Jun 2011EXFO Inc.Request Info
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. Added are detailed error vector magnitude (EVM) and bit-error-rate
(BER) analysis, mask tests and support of homodyne characterization. The time-resolved
EVM analysis allows fast and precise identification of transmitter impairments.
The BER and symbol-error-rate computation in a gearbox allows users to provide the
patterns and sequences employed in their transmitter to get precise mapping of errors.