Sparing for multi-wavelength optical transmitter

摘要: A multi-wavelength optical transmission system includes a plurality of primary transmitters, each being configured to provide directly modulated analog signals at non-uniformly spaced apart wavelengths. An multiplexer having input ports receives the from transmitters and provides wavelength division multiplexed signal over an fiber coupled output thereof. spare transmitter is port and, in response detecting failure failed one tuned that selected as be relative least some wavelengths according tuning data.