Optical receptacle and optical module

Patent metadata

Field	Value
Publication number	US-9354409-B2
Application number	US-201414324263-A
Country	US
Kind code	B2
Filing date	Jul 7, 2014
Priority date	Jul 8, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

An optical receptacle has a first optical surface which receives incidence of light from a light emitting element, a reflecting surface which reflects the light along a substrate, a light separating section which separates light reflected at the reflecting surface into monitor light and signal light, a second optical surface which emits the monitor light toward a light receiving element, and a third optical surface which emits the signal light toward an optical fiber. The light separating section has a plurality of splitting transmissive surfaces which are vertical surfaces with respect to the optical axis of the light reflected at the reflecting surface and a plurality of splitting reflecting surfaces which are inclining surfaces with respect to the optical axis of the light reflected at the reflecting surface. The splitting transmissive surfaces and the splitting reflecting surfaces are alternately disposed in a first direction and in a second direction.

First claim

The invention claimed is:

1. An optical receptacle disposed between an optoelectric converting device and an optical fiber, the optoelectric converting device having a light emitting element and a light receiving element for monitoring light emitted from the light emitting element disposed on a substrate, the optical receptacle optically coupling the light emitting element and an end face of the optical fiber, the optical receptacle comprising:
a first optical surface which receives the light emitted from the light emitting element;
a reflecting surface which reflects light incident from the first optical surface in a direction along the substrate;
a recess which has an emitting region for emitting part of the light reflected at the reflecting surface and an incidence surface for receiving incidence of the light emitted from the emitting region;
a light separating section which is disposed in the emitting region, separates the light reflected at the reflecting surface into monitor light directed to the light receiving element and signal light directed to the end face of the optical fiber, and reflects the monitor light toward the light receiving element while emitting the signal light to the recess;
a second optical surface which emits the monitor light separated at the light separating section toward the light receiving element; and
a third optical surface which emits the signal light, which has been emitted from the light separating section and then incident from the incidence surface, toward the end face of the optical fiber, wherein
the light separating section has a plurality of splitting transmissive surfaces which transmit the light reflected at the reflecting surface and emit the light to the recess and a plurality of splitting reflecting surfaces formed in regions different from regions of the plurality of splitting transmissive surfaces, the splitting reflecting surfaces reflecting the light reflected at the reflecting surface toward the second optical surface,
the splitting transmissive surfaces are vertical surfaces with respect to an optical axis of the light reflected at the reflecting surface,
the splitting reflecting surfaces are inclining surfaces with respect to the optical axis of the light reflected at the reflecting surfaces, and
the splitting transmissive surfaces and the splitting reflecting surfaces are alternately disposed in a first direction which is an inclining direction of the splitting reflecting surfaces and in a second direction which is along the splitting reflecting surfaces and orthogonal to the first direction.

2. The optical receptacle according to claim 1 , wherein
the light separating section further has splitting stepped surfaces each of which connect the splitting transmissive surfaces and the splitting reflecting surface in the inclining direction of the splitting reflecting surfaces,
the splitting stepped surfaces are parallel surfaces with respect to the optical axis of the light reflected at the reflecting surface, and
the splitting reflecting surfaces is alternated with the splitting transmissive surfaces and the splitting stepped surfaces in the first direction and in the second direction so as to form a matrix shape.

3. An optical module comprising;
an optoelectric converting device having a light emitting element and a light receiving element for monitoring light emitted from the light emitting element disposed on a substrate; and
the optical receptacle according to claim 2 .

4. The optical module according to claim 3 , wherein
the optoelectric converting device has a plurality of the light emitting elements disposed in line, and a plurality of the light receiving elements disposed in line so as to be parallel to the line of the light emitting elements, and
the optical receptacle has a plurality of the first optical surfaces disposed in line so as to correspond to the line of the light emitting elements, a plurality of the second optical surfaces disposed in line so as to correspond to the line of the light receiving elements, and a plurality of the third optical surfaces disposed in line.

5. The optical receptacle according to claim 1 , comprising a plurality of the first optical surfaces disposed in line, a plurality of the second optical surfaces disposed in line, and a plurality of the third optical surfaces disposed in line.

6. An optical module comprising;
an optoelectric converting device having a light emitting element and a light receiving element for monitoring light emitted from the light emitting element disposed on a substrate; and
the optical receptacle according to claim 5 .

7. The optical module according to claim 6 , wherein
the optoelectric converting device has a plurality of the light emitting elements disposed in line, and a plurality of the light receiving elements disposed in line so as to be parallel to the line of the light emitting elements, and
the optical receptacle has a plurality of the first optical surfaces disposed in line so as to correspond to the line of the light emitting elements, a plurality of the second optical surfaces disposed in line so as to correspond to the line of the light receiving elements, and a plurality of the third optical surfaces disposed in line.

8. An optical module comprising:
an optoelectric converting device having a light emitting element and a light receiving element for monitoring light emitted from the light emitting element disposed on a substrate; and
the optical receptacle according to claim 1 .

9. The optical module according to claim 8 , wherein
the optoelectric converting device has a plurality of the light emitting elements disposed in line and a plurality of the light receiving elements disposed in line so as to be parallel to the line of the light emitting elements, and
the optical receptacle has a plurality of the first optical surfaces disposed in line so as to correspond to the line of the light emitting elements, a plurality of the second optical surfaces disposed in line so as to correspond to the line of the light receiving elements, and a plurality of the third optical surfaces disposed in line.

Assignees

• Enplas Corp

Inventors

• Tanazawa Masahiro

Classifications

• G02B6/4214

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title

• G02B6/4286 Primary

  Optical modules with optical power monitoring · CPC title

• G02B6/2817

  using reflective elements to split or combine optical signals · CPC title