摘要:
A method for switching an optical connector having paired optical connectors, having pins engaged with engaging holes of the optical connectors, which involves a connector disposing step of disposing the switching optical connector parallel to the separating optical connector, a pin forward moving step of moving the pins engaged with both the reconnecting and separating optical connectors each other to the reconnecting optical connector side, then a connecting switching step of relatively moving the reconnecting optical connector, the separating optical connector and the switching optical connector and the front end faces thereof, and finally pin backward moving step of moving the pins of the reconnecting optical connector side to the switching optical connector side. Thus, the method and an apparatus for switching an optical connector can momentarily switch to connect optical transmission units with optical connectors without depending upon a worker's skill as well as to mechanize or automate the replacing work.
摘要:
An optical switch includes at least one input optical semi-conductor waveguide. Two output optical semiconductor waveguides are connected at a branch point to the input optical waveguide, and diverge from the branch point with a preset angle .theta. (degree) between them. A refractive index controlling portion is located on at least one of the output optical waveguides and away from the branch point. The refractive index controlling portion effects a light mode cut-off by electromagnetically causing a reduction of the refractive index of the associated output optical waveguide.
摘要:
In a total internal reflection-type optical waveguide switch which comprises optical waveguides crossing each other so that a refractive index changing region for developing a reflective surface is formed at a crossing section between the waveguides, the refractive index changing region has a configuration such that the reflective surface constitutes a concave surface recessed with respect to one lateral portion of the crossing section. When the refractive index changing region is not activated, incident light upon the spot corresponding to the reflective surface is insensitive to changes of the refractive index in the refractive index changing region, so that the initial crosstalk level can be lowered.
摘要:
An optical switch includes at least one input optical semi-conductor waveguide. Two output optical semiconductor waveguides are connected at a branch point to the input optical waveguide, and diverge from the branch point with a preset angle .theta. (degree) between them. A refractive index controlling portion is located on at least one of the output optical waveguides and away from the branch point. The refractive index controlling portion effects a light mode cut-off by electromagnetically causing a reduction of the refractive index of the associated output optical waveguide.
摘要:
A manufacturing method for a semiconductor optical component in which ridge-shaped semiconductor light amplifier sections and ridge-shaped semiconductor waveguides connected thereto are integrated on the same substrate includes the steps of forming the ridge-shaped semiconductor light amplifier sections having a path width narrower than that of the ridge-shaped semiconductor waveguide at the appropriate positions on the substrate on which the ridge-shaped semiconductor light amplifier sections are to be formed; and forming the ridge-shaped semiconductor waveguide at the remaining positions other than the appropriate positions so as to connect to the ridge-shaped semiconductor light amplifier sections. The semiconductor optical component manufactured by this method provides high current density because the confining of the current injected to the light amplifier is strengthened. Therefore, it is useful as an optical component which can perform light amplification efficiently even if a small current is injected.
摘要:
An optical line monitoring method and an apparatus for locating a failure point in an optical communication system, wherein a plurality of types of inspection light rays having wavelengths which are determined by cut-off wavelengths, which differ from each other, of short-wavelength pass filters installed at a plurality of branched ports of an optical coupler/splitter of the communication system are sent from a light source having variable wavelengths into one or more corresponding optical fiber lines of the system in sequence via an optical directional coupler and the optical coupler/splitter. Each time reflected light, corresponding to the inspection light, from one or more optical fiber lines is received, an output representing the intensity level of the reflected light is sent from a light receiver to an arithmetic circuit and stored in the arithmetic circuit. The arithmetic circuit calculates the reflected light intensity levels which correspond to the individual optical fiber lines according to the light receiver outputs which individually correspond to inspection light rays, whereby the position of the failure in the optical fiber line incurring the failure is identified.
摘要:
An optical connecting device including an optical waveguide substrate having a plurality of optical waveguides, at least two fiber arranging members connected to at least one connecting end surface of the optical waveguide substrate, and an optical fiber disposed in the position controlling means of the fiber arranging members, wherein the connecting end surfaces of the optical wave guides and the optical fiber are brought in contact with each other, thereby the optical waveguides and the optical fiber are optically connected to each other. An optical connecting device including a first optical connector having a plurality of hole groups formed of a first fiber through hole and a pair of first positioning pin holes provided in both sides of the first fiber through hole, and a first optical fiber inserted into the first through hole such that its connecting end surface is exposed, a plurality of second optical connectors having a second fiber through hole and a pair of second positioning pin holes provided in both sides of the second fiber through hole, and a second optical fiber inserted into the second through hole such that its connecting end surface is exposed, and positioning pins inserted into first and second positioning pin holes, wherein the connecting end surfaces of of the first and second optical connectors are brought into contact with each other.
摘要:
This invention describes a method of manufacturing silica waveguide optical components in which silica glass films are laminated on a substrate by repeating a unit operation in which a sol material, a precursor of glass particles, is coated and then the coated layer is heated in an oxygen atmosphere. wherein the heating temperature is controlled in such a manner that the radius of curvature of warping of the substrate is 2 m or more after the coated layer is heated, thereby preventing cracking in the formed silica glass film and/or peeling of the coated layer. At locations where a difference in height is present, at least when sol is coated first time, the thickness of the coated layer is less than that of one of the subsequent coated layers.
摘要:
A method of connecting waveguides and optical fibers includes the steps of forming the waveguides and a marker at the same time on a waveguide substrate when patterning the waveguides by a photolithography method, forming a clad layer on a region other than another region when the marker is formed so as to embed the waveguides, and forming a fitting pin groove at a position corresponding to a position of the marker. By using this fitting pin groove, a waveguide module and an optical fiber connector are connected so as to connect each of the waveguides and each of the optical fibers with each other. With this method, waveguides and optical fibers can be aligned and connected with each other easily and in a short period of time without employing an expensive aligning device.
摘要:
A planar waveguide-type optical switch comprising: a first base including a substrate, a plurality of planar waveguide pairs having different optical connection functions and arranged at predetermined pair spaces on the substrate, and a set of butting end faces, the respective end faces of waveguides constituting the plurality of waveguide pairs being exposed on the butting end faces at predetermined pitches; and second and third bases each having a joint end face butted to each corresponding butting end face of the first base, and provided with at least a set of optical fiber pairs optically connected to optical transmission routes and arranged at the same pitch as the waveguides, the respective end faces of optical fibers constituting the set of optical fiber pairs being exposed on the joint end faces. In this planar waveguide type optical switch, any of the first to third bases butt-connected to one another is moved parallel for the pair space of the planar waveguide pairs along the butting end face so that at least a set of optical fiber pairs of the second and third bases connected to a predetermined planar waveguide pair out of the plurality of planar waveguide pairs are optically connected to a desired planar waveguide pair, whereby the optical transmission routes are switched.