System and method to compensate for frequency distortions and polarization induced effects in optical systems

A computer program comprising program instructions when executed by a computer processer causes a computer to control a system for use with an optical wavelength tunable laser source having a number of different sweep segments by performing the steps of:

• selecting at least one stable coarse reference wavelength section;
• selecting a fine wavelength reference section and adapting for measuring a periodic wavelength response of an optical device having a Free Spectral Range smaller than the coarse reference wavelength section;
• and
• stitching together contiguous sweep segments of the tunable laser source wherein the fine periodic wavelength reference provides a relative offset wavelength reference compared to the coarse wavelength reference section, such that a minimum required overlap between sweep segments is reduced.

A method of wavelength referencing and polarization mitigation for use with an optical wavelength tunable laser source having a number of different sweep segments, said method comprising the steps of:

• selecting at least one stable coarse reference wavelength section;
• selecting a fine wavelength reference section and adapting for measuring a periodic wavelength response of an optical device having a Free Spectral Range smaller than the coarse reference wavelength section;
• and
• stitching together contiguous sweep segments of the tunable laser source wherein the fine periodic wavelength reference provides a relative offset wavelength reference compared to the coarse wavelength reference section, such that a minimum required overlap between sweep segments is reduced.