Patent ID: 7207731

Claim:
An optical module comprising: (a) an optical-receptacle housing that has a receptacle portion, which extends along a predetermined axis, and a flange portion provided at one end of the receptacle portion; (b) an optical-communication subassembly that has a stem, which mounts a semiconductor optical device, and a cap covering the semiconductor optical device; and (c) a holder that: (c1) has a side-wall portion that holds the optical-communication subassembly and that extends along the predetermined axis; (c2) has a mounting portion that mounts the optical-receptacle housing and that is provided at one end of the side-wall portion; and (c3) optically couples the optical-receptacle housing and the optical-communication subassembly with each other; the flange portion having a plurality of first portions, which extend along a reference plane perpendicular to the predetermined axis, and a plurality of second portions, each of which is positioned between the first portions; the outer periphery of the first portions being positioned at the outside of a reference cylinder whose center is coincident with the predetermined axis; the outer periphery of the second portions being positioned at the inside of the reference cylinder; the optical-receptacle housing and the holder being bonded with each other at the first portions of the flange portion through first bonding members; the optical-receptacle housing and the holder being bonded with each other at the second portions of the flange portion through second bonding members.