Optical connection structure

An optical connection structure comprising:

• a plurality of optical fibers disposed such that end faces are arranged in at least a first direction and respectively extending along a second direction intersecting the first direction;
• an optical functional component having a first surface facing the end faces of the plurality of optical fibers and optically coupled to the end faces of the plurality of optical fibers on the first surface;
• a holding member having a second surface facing the first surface and directly or indirectly fixed to the first surface, a third surface facing away from the second surface, and a plurality of fiber holding holes extending from the third surface toward the second surface and respectively accommodating the plurality of optical fibers;
• and
• a distortion suppression member having a fourth surface facing the third surface and directly or indirectly fixed to the third surface and sandwiching the holding member with the optical functional component in the second direction,
• wherein thermal expansion coefficients of the optical functional component and the distortion suppression member are higher than a thermal expansion coefficient of the holding member or the thermal expansion coefficients of the optical functional component and the distortion suppression member are lower than the thermal expansion coefficient of the holding member, and
• wherein the third surface is a rear-most surface of the holding member in the second direction, the fourth surface is a front-most surface of the distortion suppression member in the second direction, and the entire fourth surface is disposed to face the third surface.