Patent ID: 7110631
Filing Date: 2006-09-19
Classification: G02B,H01S

Abstract:
1. A method of adjusting a center channel wavelength of a group of channel wavelengths of a plurality of modulated sources integrated in a photonic integrated circuit (PIC) relative to the center of a wavelength passband of an optical combiner also integrated in the photonic integrated circuit (PIC) and optically coupled to outputs from the modulated sources, comprising the steps of: passivating the PIC surface with a passivation layer; measuring the alignment of the center channel wavelength relative to the center of a passband of the optical combiner; removing a portion of the passivation layer overlying the optical combiner if there is misalignment of the center channel wavelength relative to the center of the passband of the optical combiner so that the center channel wavelength is substantially aligned to the center of the wavelength passband of the optical combiner.