Wavelength multiplexing optical module, wavelength demultiplexing optical module, and optical module
A module includes a substrate, a transmission member and a reflection member, wherein on the substrate, surface emitting elements which emit light having different wavelengths are arranged side by side in a predetermined direction, the transmission member has a first surface which is parallel to the substrate and a second surface which is opposite to the first surface, the reflection member has a third surface which is parallel to the second surface of the transmission member, the second surface of the transmission member is inclined in the predetermined direction relative to the first surface and faces the third surface of the reflection member with an air layer in between, on the second surface of the transmission member, optical filters are arranged linearly side by side and the plurality of optical filters.
1. A wavelength multiplexing optical module comprising:
a substrate;
a transmission member; and
a reflection member, wherein
on the substrate, a plurality of surface emitting elements which emit light having different wavelengths are arranged side by side in a predetermined direction,
the transmission member has a first surface which is parallel to the substrate and a second surface which is opposite to the first surface,
the reflection member has a third surface which is parallel to the second surface of the transmission member,
the second surface of the transmission member is inclined in the predetermined direction relative to the first surface and faces the third surface of the reflection member with an air layer in between,
on the second surface of the transmission member, a plurality of optical filters are arranged linearly side by side, and
the plurality of optical filters are arranged such that
light emitted from a surface emitting element other than a predetermined surface emitting element among the plurality of surface emitting elements passes through the transmission member and any of the optical filters, and is then reflected by the third surface of the reflection member and any of the optical filters, being combined with light emitted from the predetermined surface emitting element and having passed through the transmission member and a predetermined optical filter,
the reflection member further has a fourth surface which makes a predetermined angle with the third surface in the predetermined direction, and
the reflection member is fixed such that light emitted from the plurality of surface emitting elements and combined is reflected by the fourth surface to be emitted to an optical fiber which is parallel to the substrate.
2. The wavelength multiplexing optical module according to claim 1 , wherein
materials of the transmission member and the reflection member are glass, and
the third surface and the fourth surface of the reflection member each have a reflection film.
3. The wavelength multiplexing optical module according to claim 1 , wherein
the transmission member includes a reflection member-side spacer portion which is in contact with the reflection member, and
the reflection member-side spacer portion holds the third surface of the reflection member in parallel to the second surface of the transmission member.
4. The wavelength multiplexing optical module according to claim 3 , wherein in the reflection member-side spacer portion, a cut groove which supports the reflection member is formed.
5. The wavelength multiplexing optical module according to claim 1 , wherein
the transmission member includes a substrate-side spacer portion which is in contact with the substrate, and
the substrate-side spacer portion holds the first surface of the transmission member in parallel to the substrate.
6. A wavelength demultiplexing optical module comprising:
a substrate;
a transmission member; and
a reflection member, wherein
on the substrate, a plurality of light receiving elements are arranged side by side in a predetermined direction,
the transmission member has a first surface which is parallel to the substrate and a second surface which is opposite to the first surface,
the reflection member has a third surface which is parallel to the second surface of the transmission member,
the second surface of the transmission member is inclined in the predetermined direction relative to the first surface and faces the third surface of the reflection member with an air layer in between,
on the second surface of the transmission member, a plurality of optical filters are arranged linearly side by side, and
the plurality of optical filters are arranged such that
light having a predetermined wavelength among light having a plurality of wavelengths contained in wavelength multiplexed light passes through a predetermined one of the optical filters and the transmission member, being incident on a predetermined light receiving element among the plurality of light receiving elements, and
light having a wavelength other than the predetermined wavelength among the light having the plurality of wavelengths is reflected by any of the optical filters and the third surface of the reflection member and then passes through any of the optical filters and the transmission member, being incident on a light receiving element other than the predetermined light receiving element among the plurality of light receiving elements,
the reflection member further has a fourth surface which makes a predetermined angle with the third surface in the predetermined direction, and
the reflection member is fixed such that the wavelength multiplexed light is emitted from an optical fiber which is parallel to the substrate and is reflected by the fourth surface, being incident on the predetermined light receiving element.
7. The wavelength demultiplexing optical module according to claim 6 , wherein
materials of the transmission member and the reflection member are glass, and
the third surface and the fourth surface of the reflection member each have a reflection film.
8. The wavelength demultiplexing optical module according to claim 6 , wherein
the transmission member includes a reflection member-side spacer portion which is in contact with the reflection member, and
the reflection member-side spacer portion holds the third surface of the reflection member in parallel to the second surface of the transmission member.
9. The wavelength demultiplexing optical module according to claim 8 , wherein in the reflection member-side spacer portion, a cut groove which supports the reflection member is formed.
10. The wavelength demultiplexing optical module according to claim 6 , wherein
the transmission member includes a substrate-side spacer portion which is in contact with the substrate, and
the substrate-side spacer portion holds the first surface of the transmission member in parallel to the substrate.
11. An optical module comprising:
a substrate;
a transmission member; and
a reflection member, wherein
on the substrate, a plurality of surface emitting elements which emit light having different wavelengths are arranged side by side in a predetermined direction, and a plurality of light receiving elements are arranged side by side in the predetermined direction,
the transmission member has a first surface which is parallel to the substrate and a second surface which is opposite to the first surface,
the reflection member has a third surface which is parallel to the second surface of the transmission member,
the second surface of the transmission member is inclined in the predetermined direction relative to the first surface and faces the third surface of the reflection member with an air layer in between,
on the second surface of the transmission member, a plurality of first optical filters are arranged linearly side by side, and a plurality of second optical filters are arranged linearly side by side,
the plurality of first optical filters are arranged such that
light emitted from a surface emitting element other than a predetermined surface emitting element among the plurality of surface emitting elements passes through the transmission member and any of the first optical filters, and is then reflected by the third surface of the reflection member and any of the first optical filters, being combined with light emitted from the predetermined surface emitting element and having passed through the transmission member and a predetermined one of the first optical filters, and
the plurality of second optical filters are arranged such that
light having a predetermined wavelength among light having a plurality of wavelengths contained in wavelength multiplexed light passes through a predetermined one of the second optical filters and the transmission member, being incident on a predetermined light receiving element among the plurality of light receiving elements, and
light having a wavelength other than the predetermined wavelength among the light having the plurality of wavelengths is reflected by any of the second optical filters and the third surface of the reflection member, and then passes through any of the second optical filter and the transmission member, being incident on a light receiving element other than the predetermined light receiving element.