The TLS-101 is a compact tunable laser source. A C-band and an L-band version are available. Each version can be step-tuned with a resolution of 50 GHz in less than 20 ms. An internal wavelength locker assures that the wavelength of the output light is exactly on the ITU grid of the DWDM channels.

The light source has three operation modes:

The fixed wavelength output mode allows the user to select a static wavelength.
The single-trip wavelength mode scans a user-set range with selectable parameters.
The round-trip mode does a bi-directional scan.

The TLS-101 can be controlled from the front panel or from any of the standard digital control ports: USB, RS-232, Ethernet, or GPIP.