US 12,199,665 B2 · Optical monitor device

Abstract

For an optical monitor device that detects the intensity of light propagating through an optical fiber, a reduction in size and cost of the optical monitor device are to be achieved. The present disclosure provides an optical monitor device including: an optical component that branches an incoming light at a specific branching ratio and outputs the majority thereof in a specific direction and the rest thereof in another specific direction; a plurality of incoming-side optical fibers through which light is to propagate and that are two-dimensionally arranged to cause the light to enter the optical component; a plurality of outgoing-side optical fibers through which light is to propagate and that are arranged to receive the most outgoing light from the optical component; a light-receiving element located to receive a partial outgoing light from the optical component; an incoming-side lens located between the optical component and the incoming-side optical fibers and that causes the incoming light into the optical component to be a parallel light; and an outgoing-side lens located between the optical component and the outgoing-side optical fibers and that efficiently couples the outgoing light from the optical component to the outgoing-side optical fibers.

Claims19

Dependent claims

An optical monitor device comprising:

an optical component configured to branch an incoming light at a branching ratio and output a part of the incoming light in a first direction that is parallel to an axis of the incoming light and a rest of the incoming light in a second direction that is at a first angle relative to the axis of the incoming light;
a plurality of incoming-side optical fibers that are two-dimensionally arranged to cause light to enter the optical component;
a plurality of outgoing-side optical fibers that are two-dimensionally arranged to receive respective outgoing lights in the first direction from the optical component;
a light-receiving element located to receive outgoing lights in the second direction from the optical component;
an incoming-side lens located between the optical component and the incoming-side optical fibers and configured to cause incoming lights into the optical component to be parallel lights;
and
an outgoing-side lens located between the optical component and the outgoing-side optical fibers and configured to couple the outgoing lights from the optical component to the outgoing-side optical fibers,
wherein the incoming-side lens is directly coupled to the optical component and the incoming-side optical fibers, and
wherein the outgoing-side lens is directly coupled to the optical component and the outgoing-side optical fibers.

6 more elements

An optical monitor device comprising:

an optical component configured to branch an incoming light at a branching ratio and output a part of the incoming light in a first direction that is at a first angle relative to an axis of the incoming light and a rest of the incoming light in a second direction that is parallel to the axis of the incoming light;
a plurality of incoming-side optical fibers that are two-dimensionally arranged to cause light to enter the optical component;
a plurality of outgoing-side optical fibers that are two-dimensionally arranged to receive respective outgoing lights in the first direction from the optical component;
a light-receiving element located to receive outgoing lights in the second direction from the optical component;
an incoming-side lens located between the optical component and the incoming-side optical fibers and configured to cause incoming lights into the optical component to be parallel lights;
and
an outgoing-side lens located between the optical component and the outgoing-side optical fibers and configured to couple the outgoing lights from the optical component to the outgoing-side optical fibers,
wherein the incoming-side lens is directly coupled to the optical component and the incoming-side optical fibers, and
wherein the outgoing-side lens is directly coupled to the optical component and the outgoing-side optical fibers.

6 more elements

Dependencies are inferred from the claim text.

Optical monitor device

Life of this patent

Optical monitor device

Life of this patent

Abstract

Claims19