Abstract: A module for amplifying a signal light with a remote excitation-light, includes (a) a first optical input/output line through which a signal light is transmitted, (b) a second optical input/output line through which a signal light is transmitted, (c) an optical amplifier which amplifies a signal light on receipt of an excitation light transmitted through the first or second optical input/output line, (d) a bypass circuit which allows the signal light to bypass the optical amplifier, (e) a first optical connector which optically connects the first optical input/output line to the optical amplifier, and further optically connects the first optical input/output line to the bypass circuit, and (f) a second optical connector which optically connects the second optical input/output line to the optical amplifier, and further optically connects the second optical input/output line to the bypass circuit.

Abstract: The present invention is concerned with an optical cable with improved tracking resistance comprising at least one optical fiber and an outer sheath which comprises a polymeric material, characterized in that the polymeric material forms a matrix for the sheath and consists of a multimodal olefin polymer obtained by a coordination catalyzed polymerization, and in that the total composition of the sheath comprises 15–40% by weight of a metal hydroxide, preferably magnesium hydroxide and/or aluminium hydroxide, and 0.01–0.9% by weight of carbon black.

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: A three-dimensional optical waveguide includes plural cores, a cladding, and an optical path converting device disposed at least at a part of the cores. The cores are provided in a specified direction at least in two rows and in two layers. The cores are buried in the cladding and the cladding has a refractive index different from that of the cores. The optical path converting device converts the direction of the optical path formed by the cores to a direction different from the specified direction.

Abstract: Exemplary embodiments of some aspects of the invention provide an optical decoding device including: a splitting device having first, second, and third, terminals; a nonlinear element; and an attenuator, wherein the second and third terminals are associated with an optical loop including the attenuator and the nonlinear element, the nonlinear element being displaced from a mid-point of the optical loop, and wherein the decoding device is able to receive multiple encoded signals via the first terminal, to decode at least one of the encoded signals and to provide a decoded signal at the first terminal in response to the at least one encoded signal. Exemplary embodiments of further aspects of the invention provide an optical code responsive device for decoding optical encoded signals, codes, and/or symbols, for header processing, for header reading, for address decoding and/or for optical packet routing.

Abstract: An evanescent optically coupled electronic device including: a backplane wave guide or mother board including a set of parallel carriers that define a first plurality of parallel channels and include a first array of optical fibers having exposed cores in the first plurality of parallel channels; at least one electronic card or daughter board including a high speed optical waveguide bus; a flexible fiber ribbon or film including waveguides made up of individual optical fibers of locally increased refractive index joined by a web of suitable material forming the high speed optical waveguide bus and optically connecting the backplane waveguide and the at least one electronic card with no 90° angle turns; and a mechanism for retaining the first array of optical fibers having exposed cores in abutting and facing evanescent optical contact with the individual optical fibers in the flexible fiber or ribbon.

Abstract: Electronically controllable arrayed waveguide gratings (AWGs) with integrated phase error compensation for each individual arm of the array of waveguides. These AWGs and associated methods for static and dynamic phase compensation enable the fabrication of tunable AWGs which can track one or more drifting channels of an AWG.

Abstract: A optical connector device, which comprises a two-dimensional optical waveguide layer; a semiconductor laser having a function capable of switching a plurality of different oscillation modes; and an optical path converting structure for converting an optical path of an outgoing light from the semiconductor laser, in which the optical path converting structure is disposed within the two-dimensional optical waveguide layer such that a radiation angle of the semiconductor laser changes within the two-dimensional optical waveguide layer upon switching over the oscillation mode of the semiconductor laser, and the outgoing light from the semiconductor laser propagates in the two-dimensional optical waveguide layer.

Abstract: A method is provided for making ferrules for connecting optical fibers to other optical fibers or to an optical input device such as an optical chip. The method utilizes ceramic greensheets or silicon wafers. In one method, the greensheets are stacked and laminated and then fiber optic through openings are provided in the laminate for holding the fibers. The laminate is then sintered forming the ferrule.

Abstract: A monolithically integrated optic triplexer is described herein that can be mounted in one transistor outline (TO) can and can be used in a passive optical network. The monolithically integrated optic triplexer includes: an emitting laser; at least a first photodiode that is capable of receiving an optical signal; and a thin film filter that is located between the emitting laser and the first photodiode. In addition, the monolithically integrated optic triplexer may include a thin film filter that is located between the first photodiode and a second photodiode. Also described herein is a method for making the monolithically integrated optic triplexer.

Abstract: An optical architecture is provided comprising at least one broadband light source, a mod/mux unit, and a plurality of premises stations in communication with the mod/mux unit via an optical distribution hub. The mod/mux unit is configured to permit selective modulation of demultiplexed components of a target wavelength band of an optical signal, multiplex the selectively modulated optical signal, and direct the target wavelength band and a bypass wavelength band of the multiplexed optical signal to the optical distribution hub. The optical distribution hub comprises an arrayed waveguide grating configured to demultiplex the multiplexed optical signal and distribute respective distinct wavelength portions of the target wavelength band and respective distinct wavelength portions of the bypass wavelength band to respective ones of the premises stations.

Abstract: The Q factor and electric field pattern (radiation pattern) for a cavity made from a donor-type point defect 4 as is illustrated in FIG. 1 were simulated by the FDTD method. The simulation parameters were configured by selecting silicon for the slab 1; and setting approximately 1.55 ?m, which is generally used in optical communications, for the wavelength ?; 0.42 ?m for the lattice constant a; 0.6a for the slab 1 thickness; and 0.29a for the predetermined sectional radius of the through-holes 2.

Abstract: A photonic crystal device according to the present invention includes: a substrate 201; a periodic structure portion 206 formed in or on the substrate 201, the periodic structure portion 206 having a plurality of holes 2050 and 2051 arranged in a periodic array; at least one optical waveguide 202 formed in or on the substrate 201, the at least one optical waveguide 202 being adjacent to the periodic structure portion 206; and at least one optical resonator 203 formed in or on the substrate 201, the at least one optical resonator 203 being formed in a position away from the optical waveguide 202, with at least one hole 2051 among the plurality of holes 2050 and 2051 of the periodic structure portion 206 being interposed between the optical resonator 203 and the optical waveguide 202.

Abstract: A fiber optic module includes a first housing insert molded with an electromagnetic interference (EMI) shield, an optoelectronic subassembly mounted in the first housing, and a second housing mounted to the first housing to enclose the optoelectronic subassembly. The EMI shield includes a conductive mesh and conductive contact fingers. The first housing includes a non-conductive housing floor, non-conductive housing sidewalls, and a non-conductive nose defining at least one connector receptacle, wherein the housing floor and the housing sidewalls are injection molded through the mesh of the EMI shield to be integral with the nose and so that the fingers at least partially surround the nose.

Abstract: To provide an optical device that can be made thinner.

Abstract: An architecture is proposed for an optical node in a wavelength division multiplexed network. The optical node may be an optical add/drop node. Conventional add/drop nodes utilize a broadcast or blocking architecture. In a broadcast architecture, a copy of an optical signal is dropped to a drop path of a node while another copy continues on a through path. Thus, channels that occupy a specific portion of wavelengths (or spectrum) prior to the node are not available for use subsequent to the add/drop connectivity. In a blocking architecture, at least the through path (and often the drop path) is spectrally filtered. This permits wavelength reuse for add/drops in subsequent portions of the network. Disclosed is an optical node architecture that enables starting with a low cost approach, such as broadcast, but includes connections to permit ‘in-service’ upgrade to more capable architecture. Increasing spectral reuse is enabled through the architecture.

Abstract: The fiber optic connector includes a bulkhead connector housing, an expanded beam insert body, ferrules, ball lenses, focal length spacers, and a mating plane adapter. The expanded beam insert body is mounted to the bulkhead connector housing. The ferrules, ball lenses, and focal length spacers are mounted on the expanded beam insert body. The mating plane adapter is mountable to the bulkhead connector housing.

Abstract: A receptacle (1) as an optical connector includes a housing (5) having a box-like shape, said housing (5) being made of synthetic resin, an optical receiving device (7a) and an optical transmitting device (7b) as an optical transmitting and receiving module, a module case (8), and a shield case (9) The housing (5) includes a container. Each of the optical receiving and transmitting devices (7a), (7b) includes a main body (15a), (15b) having a photoelectric converter. The module case (8) receives the main bodies (15a), (15b). The shield case (9) includes a holder (19) into which the module case (8) is inserted through an opening (25). The shield case (9) only receives the module case (8). The shield case (9) is received by the container and attached to the housing (5).

Abstract: The present invention relates to a heating device having at least a first heating element 102 for heating at least one protective sleeve 105, 602 arranged around at least a first uncoated optical fiber section 501, 603. Said sleeve 105, 602 being arranged to shrink when exposed to heat to form a protecting member tightly enclosing said uncoated optical fiber section 501, 603. The at least first heating element is flexible, and arranged to take at least a first open state and a second substantially closed state. Said first open state is suitable for inserting and removing said protecting sleeve and fiber into and out off said heating device. Said heating element, in said second state, substantially surrounds said sleeve to form an enclosure around said sleeve, so that said heating element radiates heat around substantially the complete circumference of said sleeve.

Abstract: The invention relates to a module having a circuit carrier and having an electro-optical transducer mounted thereon for coupling in or out optical beams which are fed or conducted away via an optical fiber. The electro-optical transducer has an optical waveguide holder mounted onto a circuit carrier, the end side of which optical waveguide holder has an optoelectronic component having an optically active region, the optically active region being oriented to an optical waveguide receptacle of an optical waveguide holder.