Patent ID: 6330254
Filing Date: 2001-12-11
Classification: H01S

Abstract:
A tuner for tuning broadband optical input signals to a desired one optical wavelength selected from a plurality of predetermined optical wavelengths, said tuner comprising:a control processor receiving wavelength indicative signals and processing said wavelength indicative signals to generate wavelength determining signals in accordance with a predetermined algorithm, such that the wavelength represented by said wavelength indicative signals corresponds to a desired one optical wavelength of said predetermined optical wavelengths;a tunable filter receiving said optical input signals coupled to said processor and responsive to said wavelength determining signals for filtering said optical input signals to provide output optical signals at said desired one optical wavelength; andan optical wavelength sensor coupled to said tunable filter to receive said output optical signals and to produce said wavelength indicative signals that are indicative of the wavelength of said output optical signals;whereby said processor, said tunable filter and said optical wavelength sensor form a control loop, controlled by said processor such that said tunable filter is tuned to said desired one optical.