A system and method is provided to calibrate a transmission laser, such as a widely tunable laser (WTL), within a dense wavelength division multiplexer (DWDM) for transmission through an optic fiber. The WTL is tuned to the ITU grid using an etalon and a gas cell. The absolute transmission wavelengths...http://www.google.de/patents/US20020044575?utm_source=gb-gplus-sharePatent US20020044575 - System and method for determining transmission wavelengths for lasers in a dense wavelength division multiplexer
