Optical module

An optical module comprising:

• a housing that has an opening portion;
• an optical component disposed inside the housing;
• and
• a fiber block that holds one end of an optical fiber outside the housing, the fiber block physically connecting the one end of the optical fiber to a light input/output end of the optical component via the opening portion of the housing, wherein
• the optical component is in direct contact with the fiber block,
• the housing and the fiber block are displaced from one another by a gap between the opening portion and the fiber block,
• the fiber block is moveable in the gap in a direction that is perpendicular to an optical axis of the optical fiber, and
• a part of the fiber block on the optical fiber side is outside the housing.