Abstract: An optical printed circuit board includes a substrate, a first cladding layer, a core layer, and a second cladding layer. The first cladding layer is formed on the substrate and defines a receiving groove. The core layer is received in the receiving groove. The second cladding layer is formed on the core layer. The refractive index of the core layer is greater than that of the first cladding layer and that of the second cladding layer. The core layer includes a bottom surface, a first refractive surface, and a second refractive surface. An included angle between the bottom surface and the first refractive surface is about 135 degrees. An included angle between the bottom surface and the second refractive surface is about 135 degrees.

Abstract: A fiber access terminal includes a drop cable side and a distribution cable side. The sides are separated by a frame to which a variety of cable management and cable connections components may be mounted. Optical fibers are routed from drop and distribution cables through a plurality of routing paths to splice trays for connection to other optical fibers. The terminal includes a base and a dome cover mounted to the base defining an enclosed interior. Passageways between the base and the dome cover are closed by removable covers to limit moisture and animals from accessing an interior of the dome cover. A tether connects the removable covers to the frame.

Abstract: First and second optical fibers are opposed to each other, between which first and second lenses constituting a lens system having an optical axis coincident with those of the optical fibers are arranged with a gap therebetween in the direction of the optical axis. The actuators, ect are used to move the first and second lenses with electrostatic forces, in opposite directions along the optical axes of the optical fibers by the same amount at the same time. Thereby, the spot size of the light incident on the optical fiber on the reception side is changed while maintaining the light propagating between the first optical fiber and the second optical fiber point-symmetric in mode field shape. This changes the coupling efficiency between the first optical fiber and the second optical fiber, allowing an adjustment in light power.

Abstract: A switching device includes an optical cavity and a phase modulator disposed within the optical cavity. An optical signal is propagated into the cavity. The phase modulator can selectively introduce a phase shift between portions of the optical signals, which are then recombined and propagated out of the optical cavity. The optical cavity confines the optical signal to allow phase shifts to accumulate so that a relatively small drive power to the phase modulator can be used to achieve a relatively large phase shift.

Abstract: An archival waveguide memory device is provided and comprises a large number of elongated waveguides and a series of partially reflective elements distributed within each of the waveguides in accordance with data to be stored within the waveguides so as to act upon an input optical signal in each one of the waveguides and to generate a reflected output optical signal able to be uniquely correlated with the data. A method of recording data in a waveguide is also provided. A method of retrieving data stored in a waveguide is further provided and comprises injecting a pulsed optical signal in the waveguide, detecting a reflected output optical signal from the waveguide, and decoding a temporal variation in the reflected output optical signal to retrieve the data.

Abstract: A fiber-optic transmitting and receiving device is used on the mainstream fiber-optic system. A cover of which is used to cover the metal board and the metal tips of the fiber-optic transmitting and receiving device, the cover is formed with inserting grooves and inserting holes respectively corresponding to the metal board and the metal tips. The cover can protect the metal tips from damage and prevent short circuit. Furthermore, the independent feet are provided with check retainer which serves to engage in the sockets and the retaining holes on the transmitting and receiving head. Through this way, the independent feet can be firmly fixed, so as to prevent failures in assembly.

Abstract: Disclosed are an optical waveguide that comprises (A) a copolyester carbonate having aliphatic segment(s), and a method for producing it; and an optical waveguide made from a polycarbonate resin composition that comprises (A) a copolyester carbonate having aliphatic segment(s) and (B) an aromatic polycarbonate, and a method for producing it. The polycarbonate resin composition for the optical waveguide has the advantages of high mechanical strength and improved flowability.

Abstract: An optical-optoelectronic coupling structure comprising a flip-chip optoelectronic/ultrathin silicon-on-sapphire device mounted on a V-groove, optical-fiber-bearing carrier substrate, including light-reflective structures for launching light into the optical fiber core or transmitting light emitted by the optical fiber core to the optoelectronic device. The optical fiber may be immobilized in the V-groove using a curable resin adhesive characterized by a refractive index substantially similar to the refractive index of the optical fiber.

Abstract: Photon-conducting receiving and transmitting media (e.g., optical fibers) are aligned by coupling the receiving medium with a thermokinetic structure, which can include a shape memory alloy. A photon beam is directed from the transmitting medium onto the thermokinetic structure, thereby locally heating the thermokinetic structure. The heated portion of the thermokinetic structure contracts to displace other portions of the structure and the receiving medium, which is coupled therewith, toward the photon beam so as to align the media.

Abstract: An arrayed optical device includes a first optical fiber collimator array, a second optical fiber collimator array and an optical chip. The first optical fiber collimator array includes a first optical fiber array block and a first microlens array substrate. The second optical fiber collimator array includes a second optical fiber array block and a second microlens array substrate. The optical chip is coupled between the first microlens array substrate and the second microlens array substrate.

Abstract: In order to make alignable optical waveguides, an alignment structure is formed on at least one opposable end of the waveguides by selective chemical etching of different portions of the waveguides. The waveguides can then be brought into alignment with the alignment structure. Preferably, a pair of complementary alignment structures are formed on opposed ends of adjoining waveguides.

Abstract: An optical component and a method of making the same are provided. In one embodiment, the optical component is a low-OH optical fiber that includes a core and a cladding. The optical component is treated by immersion in a hydrogen gas atmosphere at a predetermined pressure, at a predetermined temperature and for a predetermined time period such that intrinsic and impurity defects of the optical component are destroyed. The method of making the optical component includes providing a preform having a content of OH-groups in the amount of about 0.1 to about 10.0 ppm and a content of chlorine in the amount of 0 to about 1000 ppm and drawing the preform to elongate it to form an optical component from the preform. The optical component is immersed in a hydrogen gas atmosphere at a predetermined pressure, at a predetermined temperature and for a predetermined time period that is sufficient to destroy intrinsic and impurity defects of the optical component.

Abstract: A device that compensates for focal point drift of transmitted optical beams caused by ambient temperature changes by using a position adjuster to adjust the alignment of channels of a target planar lightwave circuit (“PLC”). The channels of the target PLC may taper open. In one implementation, the device may also use a birefringence plate to compensate for polarization dependent focal point drift.

Abstract: An optical waveguide (11) includes a region (22) which, after electrical poling of a guiding region (16), maintains an internal electric field induced by the poling potential. The internal electric field may arise from charge separation between regions (18, 20) induced by an adjacent poling electrode (12A), and region (22) acts to inhibit decay of the space charge and to increase the lifetime of the induced electro-optic effect. The waveguide may comprise a twin hole optical fiber (11) with internal electrodes (12A, 14A), where the region (22) comprises a borosilicate layer concentrically disposed about one of the electrodes.

Abstract: A method, an apparatus and a system are described for receiving an optical signal in an optical filter and routing the optical signal through the optical filter multiple times.

Abstract: A method and device for using laser light to trap non-atomic particles optically within a hollow region of a hollow core optical fiber.

Abstract: An optical fiber for signal amplification comprises a core, doped with at least 15% phosphorus by weight and a rare earth ion sufficient to provide amplification of an optical signal. The fiber also comprises a clad layer surrounding the core with an inner portion and an outer portion. The refractive index of the inner portion of the clad layer is lower than that at the outer radius of the core region. This depressed inner clad portion serves to confine electromagnetic radiation within a selected wavelength range to substantially only the core.

Abstract: A low profile ringframe used in electro-optical module packaging is disclosed. The ringframe can be mounted so as to be set back from, be flush with, or be extending exteriorly over the outer end wall of the ceramic substrate, and may also be formed so as to help physically separate the ringframe-to-subtrate solder joint from the ringframe-to-laser weld seam. The ringframe, along the side where it is sealed to the adjacent substrate, can be notched with one or more cutout areas to allow a space for wicking of reflowed solder to prevent a built-up solder fillet from forming exteriorly of the ringframe.

Abstract: An optical module has port housing comprised of a material that does not substantially shield EMI, such as an optical plastic. The port housings have a receiving ferrule disposed in an aperture of an electrically conductive shell. The ferrule is movably coupled to the shell to permit it to respond to loads imposed by an optical fiber connector and includes an electrically conductive cap to shield a portion of the port housing proximate the ferrule.

Abstract: A miniature fiberoptic filter and manufacturing method is disclosed. Two aligned optical fibers, each with a step index multimode optical fiber segment and a graded index multimode optical fiber segment attached to the corresponding optical fiber, form the filter. The lengths of the step index and graded index multimode optical fiber segments define a collimation and focusing function for light from and to the optical fibers, and dielectric coatings covering the free end surface of the graded index multimode optical fiber segment of one optical fiber define a wavelength-dependent optical filter. The optical fibers are arranged and oriented so that light from the core of the first optical fiber passing through the plurality of dielectric coatings enters the core of the second optical fiber.