Abstract: An optical power monitoring apparatus according to an aspect of the present invention has an input optical waveguide, a light receiver, and an output optical waveguide. The input optical waveguide has a light entrance end and a light exit end. The input optical waveguide accepts light from the exterior through the light entrance end and outputs the light from the light exit end. The light receiver absorbs part of the light from the light exit end of the input optical waveguide and transmits the other part of the light. The output optical waveguide has a light entrance end and a light exit end. The output optical waveguide accepts the light transmitted by the light receiver, through the light entrance end, and outputs the light from the light exit end. The light receiver is provided on an optical path from the light exit end of the input optical waveguide to the light entrance end of the output optical waveguide.

Abstract: A planar optical waveguide is formed with an optical circuit having an inclined groove. A reflection filter is installed on the inside of the inclined groove 3 crossing a plurality of optical waveguides. Reflected light from the reflection filter is detected by an array of photodetectors to monitor the optical intensity of the signal light. The photodetector array is held by a sub-mounting substrate disposed at the top side of the optical circuit so that a mounting face of the photodetector array is inclined at an angle a (0°<?<90°) with respect to the top surface of the optical circuit such that the reflected light from the reflection filter is made incident onto a light incident face of the photodectors at a predetermined angle ?. The optical waveguide module is capable of monitoring the optical intensity correctly regardless of the polarization state of the signal light.

Abstract: In a planar-waveguide-type optical circuit 1, a reflection filter 4 is placed inside an oblique groove 3 formed to traverse optical waveguides 2n. Reflected light from the reflection filter 4 is detected by photodetectors 61n of a photodetector array 6, and thereby light intensity of signal light is monitored. A glass substrate made of glass material having a refractive index substantially identical to that of a core 20 of the optical waveguide 2n and filter fixing resin 5 fixing the reflection filter 4 is used for a substrate 10 of the optical circuit 1 constituting part of the groove 3. This inhibits reflection of light in various regions of the groove 3, thereby reducing generation of extra scattered light inside the groove 3 and its confinement. An optical waveguide module capable of enhancing monitoring characteristics of the signal light is thus realized.

Abstract: An optical switch is provided with an optical-fiber-arraying-member 1 in which a plurality of optical fiber fixing grooves 1a extending along radial directions of a virtual circle are radially formed in a predetermined surface of a base material, a plurality of array-side optical fibers 2 arrayed in the plurality of optical fiber fixing grooves 1a of the optical-fiber-arraying-member 1, and a moving-side optical fiber 4 to be selectively optically connected to either of the plurality of array-side optical fibers 2; the moving-side optical fiber 4 and the optical-fiber-arraying-member 1 are rotated relative to each other about a center axis 1o of the virtual circle, and the moving-side optical fiber 4 is selectively optically connected to the array-side optical fiber 2 selected.

Abstract: An optical power monitoring apparatus according to an aspect of the present invention has an input optical waveguide, a light receiver, and an output optical waveguide. The input optical waveguide has a light entrance end and a light exit end. The input optical waveguide accepts light from the exterior through the light entrance end and outputs the light from the light exit end. The light receiver absorbs part of the light from the light exit end of the input optical waveguide and transmits the other part of the light. The output optical waveguide has a light entrance end and a light exit end. The output optical waveguide accepts the light transmitted by the light receiver, through the light entrance end, and outputs the light from the light exit end. The light receiver is provided on an optical path from the light exit end of the input optical waveguide to the light entrance end of the output optical waveguide.

Abstract: In a planar optical waveguide type optical circuit 1, a reflection filter 4 is installed on the inside of a inclined groove 3, which is formed so as to cross optical waveguides 2n. Reflected light from the reflection filter 4 is detected by photodetectors 61n of a photodetector array 60, thereby the optical intensity of the signal light is monitored. As for the photodetectors 61n, there is adopted a constitution such that a sub-mounting substrate 70 is disposed at the top side of the optical circuit 1 to hold the photodetector array 60 with a photodetector mounting face 71, which is inclined at an angle ? (0°<?<90°) with respect to the top surface of the optical circuit 1 such that the reflected light from the reflection filter 4 is made incident onto a light incident face 63 of the photodetectors 61n in the photodetector array 60 at a predetermined angle ?.

Abstract: An optical device 1 has a substrate 2, whereas bare fibers 5 exposed from a coated optical fiber tape 3 by removing a coating 4 from its middle part are secured to the upper face part of the substrate 2. In the substrate 2, a transverse groove 8 is formed obliquely with respect to an axis of the bare fibers 5 so as to traverse core parts 5a of the bare fibers. An optical member 9 for reflecting a part of signal light transmitted through the bare fibers 5 is inserted in the transverse groove 8. A support member 10 is provided on the upper side of the bare fibers 5, whereas a support surface 10a of the support member 10 is provided with photodetectors 11 for detecting light reflected by the optical member 9. The support surface 10a of the support member 10 is inclined with respect to the upper face of the substrate 2, whereby the light entrance surface 13 of each photodetector 11 is inclined by a predetermined angle with respect to the upper face of the substrate 2.

Abstract: An optical switch is provided with an optical-fiber-arraying-member 1 in which a plurality of optical fiber fixing grooves 1a extending along radial directions of a virtual circle are radially formed in a predetermined surface of a base material, a plurality of array-side optical fibers 2 arrayed in the plurality of optical fiber fixing grooves 1a of the optical-fiber-arraying-member 1, and a moving-side optical fiber 4 to be selectively optically connected to either of the plurality of array-side optical fibers 2; the moving-side optical fiber 4 and the optical-fiber-arraying-member 1 are rotated relative to each other about a center axis 1o of the virtual circle, and the moving-side optical fiber 4 is selectively optically connected to the array-side optical fiber 2 selected.

Abstract: In a planar-waveguide-type optical circuit 1, a reflection filter 4 is placed inside an oblique groove 3 formed to traverse optical waveguides 2n. Reflected light from the reflection filter 4 is detected by photodetectors 61n of a photodetector array 6, and thereby light intensity of signal light is monitored. A glass substrate made of glass material having a refractive index substantially identical to that of a core 20 of the optical waveguide 2n and filter fixing resin 5 fixing the reflection filter 4 is used for a substrate 10 of the optical circuit 1 constituting part of the groove 3. This inhibits reflection of light in various regions of the groove 3, thereby reducing generation of extra scattered light inside the groove 3 and its confinement. An optical waveguide module capable of enhancing monitoring characteristics of the signal light is thus realized.

Abstract: An optical device 1 comprises a substrate 2, whereas bare fibers 5 exposed from a coated optical fiber tape 3 by removing a coating 4 from its middle part are secured to the upper face part of the substrate 2. In the substrate 2, a transverse groove 8 is formed obliquely with respect to an axis of the bare fibers 5 so as to traverse core parts 5a of the bare fibers. An optical member 9 for reflecting a part of signal light transmitted through the bare fibers 5 is inserted in the transverse groove 8. A support member 10 is provided on the upper side of the bare fibers 5, whereas a support surface 10a of the support member 10 is provided with photodetectors 11 for detecting light reflected by the optical member 9. The support surface 10a of the support member 10 is inclined with respect to the upper face of the substrate 2, whereby the light entrance surface 13 of each photodetector 11 is inclined by a predetermined angle with respect to the upper face of the substrate 2.

Abstract: An optical switch is provided with an optical-fiber-arraying-member 1 in which a plurality of optical fiber fixing grooves 1a extending along radial directions of a virtual circle are radially formed in a predetermined surface of a base material, a plurality of array-side optical fibers 2 arrayed in the plurality of optical fiber fixing grooves 1a of the optical-fiber-arraying-member 1, and a moving-side optical fiber 4 to be selectively optically connected to either of the plurality of array-side optical fibers 2; the moving-side optical fiber 4 and the optical-fiber-arraying-member 1 are rotated relative to each other about a center axis 1o of the virtual circle, and the moving-side optical fiber 4 is selectively optically connected to the array-side optical fiber 2 selected.

Abstract: In a planar waveguide optical circuit 1, a inclined groove 3 is formed at an inclination angle &thgr; with respect to the vertical axis so as to cross optical waveguides 2n. A reflection filter 4 structured such that the difference in reflectivity between orthogonal polarization is compensated for with respect to signal light is installed inside the groove 3, the reflected light from the reflection filter 4 is detected by the photodetectors 6n, and the optical intensity of the signal light is monitored. This makes it possible to accurately monitor the optical intensity regardless of the polarization state of the signal light. Also, since the inside of the groove 3 including the reflection filter 4 is sealed with a filler resin 5, any deterioration in long-term stability that would otherwise be caused by contamination of these components is prevented.

Abstract: An optical switch 1 of the present invention comprises an optical fiber arraying member 21 for keeping a plurality of first optical fibers 20 juxtaposed with tip portions thereof being aligned, a movable arm 31, opposed to the optical fiber arraying member, for holding a tip portion of at least one second optical fiber 30, a driving mechanism 40 for driving this movable arm 31 to selectively optically coupling the second optical fiber 30 with an arbitrary first optical fiber 20, a supplying mechanism 60 for, when a first optical fiber 20 is optically coupled with the second optical fiber, dropping and charging an index matching agent to a gap between these optical fibers 20, 30, and drop controllers 67, 68 for controlling the supplying mechanism 60, wherein the index matching agent is dropped and charged into only the gap between the optical fibers, so that foreign matter produced in the driving mechanism 40 or the like is prevented from intruding into the coupling part between the optical fibers 20, 30, thus

Abstract: Disclosed is an optical connector connecting apparatus. In the apparatus, a plurality of fixed optical connectors are mounted on a fixed member in a lined-up manner. An optical connector containing member having a movable optical connector mounted thereon is supported on a support member through a small-diameter beam. A moving plate mounted on a base supports the support member, and the movable optical connector is moved in X-axis, Y-axis and Z-axis directions so as to be connected to the fixed optical connector. Therefore, a position deviation at the time of the connection is corrected by the flexing of the small-diameter beam so that fine-positioning is unnecessary.

Abstract: Disclosed is an optical connector connecting apparatus. In the apparatus, a plurality of fixed optical connectors are mounted on a fixed member in a lined-up manner. An optical connector containing member having a movable optical connector mounted thereon is supported on a support member through a small-diameter beam. A moving plate mounted on a base supports the support member, and the movable optical connector is moved in X-axis, Y-axis and Z-axis directions so as to be connected to the fixed optical connector. Therefore, a position deviation at the time of the connection is corrected by the flexing of the small-diameter beam so that fine-positioning is unnecessary.

Abstract: An optical connector ferrule for use in an optical coupling of optical fibers includes an insertion member, the insertion member comprising a guide capillary for positioning said optical fibers, which comprises a flat plate and a guide substrate having optical fiber guide grooves in one surface thereof, said flat plate being bounded to said guide substrate to form optical fiber guide holes into which said optical fibers are inserted; a reinforcing pipe for surrounding said guid capillary; and a resin-molded area provided between said guide capillary and said reinforcing pipe for insert-molding said guide capillary within said reinforcing pipe.