Yenista Optics has released a series of laser modules for testing at CWDM wavelengths from 1270nm to 1610nm, plus additional modules at 1625nm and 1650nm. The CWDM modules correspond to the wavelengths used in 40Gb/s and 100Gb/s CLR4 and CWDM4 transceiver modules as well as conventional CWDM systems. The additional modules operate at supervisory channel and OTDR wavelengths.
Conventional CWDM sources are uncooled and can exhibit a drift of up to 6nm in operating wavelength, limiting their use for test and measurement applications. Yenista’s new modules integrate into its OSICS platform and are stabilised in both wavelength and power. Stability is better than 5pm and 0.01dB for wavelength and power respectively, while output power for all modules is controllable from 0.2 to 10mW.