Optical transmitter

An optical transmitter comprising:

• a plurality of light emitting elements;
• a plurality of light receiving elements that monitor output lights from the respective plurality of light emitting elements;
• a housing that mounts the plurality of light emitting elements and the plurality of light receiving elements;
• a wiring board which is mounted on the housing and which is provided with a first region having a first pad electrically connected to the light emitting element, a second region having a second pad electrically connected to the light receiving element, and a connection region which connects the first region and the second region to each other;
• and
• a cover that covers the housing;
• wherein the plurality of light emitting elements and the plurality of light receiving elements are disposed so as to be aligned along a first direction intersecting the optical axis,
• where the first region and the second region are provided so as to interpose the plurality of light emitting elements and the plurality of light receiving elements,
• wherein the housing has a guide pin that determines a position of the cover relative to the housing,
• wherein the wiring board has an extension region that is on an extension line of the connection region and extends from the second region along a second direction that intersects the first direction, and
• wherein a hole into which the guide pin is inserted is formed in the extension region.

An optical device comprising:

• a plurality of first optical elements;
• a plurality of second optical elements that are optically coupled to the plurality of first optical elements;
• a housing that mounts the plurality of first optical elements and the plurality of second optical elements;
• a wiring board which is mounted on the housing and which is provided with a first region having a first pad electrically connected to the first optical element, a second region having a second pad electrically connected to the second optical element, and a connection region which connects the first region and the second region to each other;
• a receptacle provided in the housing and disposed in a vicinity of a center of the width of the housing;
• and
• an optical component which is mounted on the housing and which has a plurality of first ends which are provided on one side and optically coupled to the plurality of first optical elements and a second end which is provided on other side facing the one side and disposed at a position offset from a center of the other side, and is optically coupled to the receptacle
• wherein the plurality of first optical elements and the plurality of second optical elements are disposed so as to be aligned along the first direction intersecting the optical axis, and
• wherein the first region and the second region are provided so as to interpose the plurality of first optical elements and the plurality of second optical elements.