Yenista releases lasers for testing at CWDM wavelengths

France-based Yenista Optics has released a series of laser modules for testing optical components at coarse wavelength division multiplexing (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 optical time-domain reflectometer (OTDR) wavelengths.

Conventional CWDM sources are uncooled and can exhibit a drift of up to 6nm in operating wavelength. This limits 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. Output power for all modules is controllable from 0.2 to 10mW.

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

The OSICS platform will be showcased at the upcoming ECOC exhibition in Valencia, Spain from 27 September to 1 October 2015.


Oleg Khaykin, CEO of Viavi Solutions, speaks candidly to Fibre Systems about how to compete in the challenging world of communications test and measurement


Hao Dong describes how innovative optical fibres and cabling could provide substantial benefits for connecting data centres across a wide range of distances


Richard Ednay considers whether fibre characterisation needs to be modified to suit modern optical communication systems that are likely to include coherent transmission


ECOC is the place to be to discover the latest technological and commercial innovations in optical components and networks. Here we highlight some of the exhibitors and events taking place in the exhibition hall.