Patent ID: 7702197

Claim:
An SOA (Semiconductor Optical Amplifier) array optical module using a lens array for optically coupling an SOA array and an optical fiber array, wherein a lens optical axis of each channel of the lens array is oblique with respect to an input side end face of the lens array, the lens optical axis of each channel is arranged to agree with a central axis of an output beam of each channel of the SOA array, an output optical beam from the SOA array is input obliquely to the lens array, and a plurality of convex parts are formed on the input side end face of the lens array, the convex parts enabling the output optical beam from the SOA array to be input into the lens array without being refracted, a principal axis of the lens is inclined 22.3 degrees from a perpendicular line against the lens array, and the output optical beam from the SOA array matches the principal axis of the lens.