To provide a ferule assembly with which a laser resonator can be obtained that is hardly affected by manufacturing variance or change in the usage environment, and also to provide an optical module equipped with such assembly. 製造バラツキや使用環境の変化の影響を受けにくいレーザ共振器が得られるフェルール組立体及びそれを備えた光モジュールを提供する。 - 特許庁