Optical receptacle, optical module, and method for producing optical module

An optical receptacle configured to be disposed between a photoelectric conversion device and an optical transmission member, the photoelectric conversion device including:

• a substrate, a photoelectric conversion element disposed on the substrate, and a detection element disposed on the substrate and configured to monitor light emitted from the photoelectric conversion element, the optical receptacle being configured to optically couple the photoelectric conversion element and an end surface of the optical transmission member, the optical receptacle comprising:
• a filter disposed on a light path between the photoelectric conversion element and the optical transmission member;
• a holding member configured to hold the filter;
• and
• a receptacle main body, disposed nearer to the optical transmission member than the filter on the light path, including:
• a first optical surface configured to allow incidence of the light having passed through the filter, and
• a second optical surface configured to emit, toward the end surface of the optical transmission member, the light having entered the receptacle main body from the first optical surface and having passed through inside of the receptacle main body,
• wherein the filter is configured to be disposed between the photoelectric conversion device and the first optical surface of the receptacle main body,
• wherein the holding member and the receptacle main body are independent from each other, and
• wherein the filter reflects, toward a detection element side as monitor light, a part of the light emitted from the photoelectric conversion element, and allows, to pass through the filter toward the first optical surface of the receptacle main body as signal light, a remaining part of the light emitted from the photoelectric conversion element.