Yenista offers laser modules for CWDM testing

French test and measurement systems developer Yenista Optics has released a series of laser modules for testing at CWDM wavelengths as well as other applications. For example, the CWDM modules focus on wavelengths from 1270 nm to 1610 nm, which fall within the wavelength range used in 40-Gbps and 100-Gbps CLR4 and CWDM4 optical transceivers as well as other CWDM applications. Additional new modules address 1625 nm and 1650 nm, supervisory channel and optical time-domain reflectometer (OTDR) wavelengths.

Conventional CWDM sources are uncooled and can exhibit a drift of up to 6 nm in operating wavelength. This limits their use for test and measurement applications. Yenista says its new modules integrate into its OSICS platform and are stabilized in both wavelength and power. This means they won't suffer the drift (up to 6 nm) that Yenista says can occur with conventional uncooled CWDM sources. The stability of the new modules is better than 5 pm and 0.01 dB for wavelength and power, respectively, Yenista says.

Output power for all of the modules is controllable from 0.2 to 10 mW.

"We have been supplying tunable lasers for testing CLR4 and CWDM4 components. Until now, this has been the only option at these wavelengths," says Yenista Sales Director David Heard. "These new products provide a lower-cost alternative, and in a platform that is already widely used in the industry."

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