Patent ID: 8725000

Claim:
A method for correcting for optical channel bandwidth misalignment between output passbands of a first optical device and input passbands of a second optical device, the method comprising: transmitting a plurality of optical signals from said output passbands of said first optical device, each of said optical signals being transmitted within an associated one of said passbands of said output; receiving said first plurality of optical signals within said input passbands of said second optical device; analyzing said optical signals to determine if said passbands of said first optical device or said second optical device has shifted; altering a characteristic of a filter through which said optical signals pass to cause a needed degree of shifting of wavelength bands of said optical signals to bring said optical signals into alignment within said passbands of said second optical device, and wherein said altering a characteristic of a filter comprises using a controller configured to: mechanically physically shift a position of said filter as needed to shift said wavelength bands of said optical signals; and mechanically physically deform said filter as needed to shift said wavelength bands of said optical signals.