72results about "Coupling light guides" patented technology

The invention discloses an optical fiber distribution combination comprising an optical fiber distribution module and an optical fiber plug, wherein the optical fiber distribution module comprises a distribution module structure body, an adapter fixed on the distribution module structure body and a signal port plug which is fixedly arranged on the distribution structure body and used for receivingan identification signal; the optical fiber plug comprises a connecting head which is used for being matched with an optical fiber interface of the adapter and transmitting an optical signal and an identification plug which is arranged at one side of the connecting head convexly, wherein the identification plug is combined with the signal port plug when the connecting head is inserted in the adapter. The invention can achieve the intelligent optical fiber distribution function based on ID and ensure the reliable transmission of a signal of a chip. In addition, the complexity of an electrically connected structure of the adapter and the optical fiber plug is lowered, the structures of the adapter and the optical fiber plug are simplified, the manufacture cost of the whole optical fiber distribution combination is lowered, and the convenient maintenance and debugging is achieved.

In relation to an optical modulator (e.g., an RZ optical modulator) formed from a plurality of Mach-Zehnder optical modulators, in an attempt to make the optical modulator compact and realize a low drive voltage, the optical modulator is formed by comprising a plurality of Mach-Zehnder optical modulators, each including a substrate exhibiting an electro-optical effect, an optical waveguide formed on the substrate, and electrodes formed in the vicinity of the optical waveguide. The plurality of Mach-Zehnder optical modulators are arranged on the substrate and connected into multistage.

This invention discloses one triangle wave phase modulation method and device of resonance chamber fiber top, wherein, the laser is connected to first couple device, first phase modulator, second couple device, third couple device, fourth couple device, second phase modulation device and first couple; the first phase modulation and first triangle wave signal generator are connected; the second phase modulation and second triangle signal generator are connected; the second couple device and first photoelectricity, first high speed digital signal processor and laser are connected; the fourth couple device is connected to fourth couple device, second photoelectricity detector, second high speed digital processor; the third couple device is connected to the fiber ring.

A silicon-based optical modulator exhibiting improved modulation efficiency and control of “chirp” (i.e., time-varying optical phase) is provided by separately biasing a selected, first region of the modulating device (e.g., the polysilicon region, defined as the common node). In particular, the common node is biased to shift the voltage swing of the silicon-based optical modulator into its accumulation region, which exhibits a larger change in phase as a function of applied voltage (larger OMA) and improved extinction ratio. The response in the accumulation region is also relatively linear, allowing for the chirp to be more easily controlled. The electrical modulation input signal (and its inverse) are applied as separate inputs to the second region (e.g., the SOI region) of each arm of the modulator.

The invention relates to a planar lightwave circuit splitter, in particular to a technique for coupling a planar lightwave circuit splitter chip and fiber array and provides a low-insertion-loss coupling technique. The low-insertion-loss coupling technique comprises an input single fiber (1), the planar lightwave circuit splitter chip (2) and an output optical fiber array (3). The low-insertion-loss coupling technique is characterized in that the input single fiber (1), the planar lightwave circuit splitter chip (2) and the output optical fiber array (3) are integrated. Difference between a chip insertion loss standard value and a finished product insertion loss value is reduced to the largest extent, phenomena of large loss and unstable performance of an automatic monitoring system caused by errors are avoided, and simultaneously production cost is reduced.

A cable assembly, comprising a housing having a plurality of receiving grooves recessing forwardly from a rear surface thereof, a plurality of lenses located on a front surface of the housing, a plurality of conductive terminals received in the housing and arranged in two rows, a cable electrically connected to the conductive terminals and a plurality of optical fibers received in the receiving grooves and alignment to the lenses, respectively. The receiving grooves are located between two rows of the conductive terminals.

A molded ceramic or glass ferrule has at least one longitudinal passage, which enables an optical fiber feed through, sealed into a metal housing with glass solder. The metal material in the housing has a slightly higher coefficient of thermal expansion (CTE) than the ferrule material and the sealing glass so that hermetic seal is maintained by a compression stress applied to the ferrule and sealing glass by the housing at operating conditions. When the housing has to be fabricated from a low CTE material, e.g. metal or ceramic, a metal sleeve and stress relief bracket is used to apply the compression stress.

A semiconductor-based tunable optical dispersion compensation method and apparatus for multiple channels. In one aspect of the present invention, an apparatus according to an embodiment of the present invention includes a semiconductor material. An optical path through the semiconductor material is included. The optical path is optically coupled to receive an optical beam. A nonlinearly chirped Bragg grating is disposed in the semiconductor material. The optical path includes the nonlinearly chirped Bragg grating to substantially reduce chromatic dispersion in the optical beam.

The invention discloses an optical module and a laser wavelength shift adjusting method and device of the optical module, and belongs to the field of optical communication. A wavelength selector allows light of the first wavelength in a first light beam to pass and reflects light not of the first wavelength in the first light beam, and thus, light not of the first wavelength is separated from the first light beam. A processor obtains the optical power of the light not of the first wavelength via a second monitoring detector, obtains the optical power of a second light beam via a first monitoring detector, and obtains the proportion of the light not of the first wavelength in the first light beam according to the optical power of the first light not of the first wavelength and the optical power of the second light beam. The light not of the first wavelength is light of the wavelength shift. According to the proportion, the processor can adjust the temperature of a laser via a temperature controller, and thus overcome the wavelength shift of the laser.

The invention relates to a wireless optical communication sending antenna with an adjustable beam divergence angle, comprising an optical lens, a fiber terminal pad and an incident fiber; wherein one end of the incident fiber is fixed on the fiber terminal pad and the other end is connected with a data transmission device; the optical lens is fixed on one end of an outside thread sleeve and after a spring is sleeved on the outside surface of the outside thread sleeve, the sleeve is screwed in from one end of an inside thread sleeve; the fiber terminal pad is fixed on the other end of the inside thread sleeve; the principal axis of the optical lens and the center of the end face of the incident fiber are in the same straight line. The adjustability of the beam divergence angle is realized by changing the axial distance between the incident fiber and the optical lens. The sending antenna has simple structure and low manufacturing cost; the adjustable process of the emitted beam divergence angle is simple and easy; besides, the sending antenna effectively solves the problems of aim and different requirements on divergence angles in the communication process of different wireless optical communication systems, thereby realizing the integration of the aim and the communication, being convenient for mass production and being applicable to routine point-to-point static wireless optical communication and light emitting systems of mobile wireless optical communication on special occasions.

A multichannel optical coupler array comprises a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides is a vanishing core waveguide. The coupler housing structure at a proximity to a first end has one of the following cross sectional configurations: a ring surrounding the longitudinal waveguides, or a structure with holes, at least one hole containing at least one of the longitudinal waveguides.

A diffraction grating of the present invention includes a first block (101) and a second block (102). The first block (101) is made up of a plurality of input waveguides (103), a slab waveguide (104), a delay waveguide array (105) and narrow grooves (106): each of which being filled with resin. The second block (102) is made up of a plurality of input waveguides (107), a slab waveguide (108) and a plurality of output waveguides (109). Since a circuit is cut off at the ends of the arrayed waveguides, a relative phase can easily be measured. The resin has undergone a refractive-index adjustment and compensates a phase error.

The invention discloses a cable stripper with a stripping thickness adjustment function. The cable stripper includes a stripper body which is provided with a grip at the bottom. A cable fixing cavity is arranged in the middle of the inside of the stripper body. A blade fixing block and a cutting blade are installed in a blade mounting hole. An adjustable pulley and an adjustable pulley fixing frame are rotationally connected by an adjustable pulley shaft. The adjustable pulley and a fixed pulley are each coated with a pulley antiskid sleeve. As a cable fixing device capable of adjusting and fixing the sizes of different cables and a device capable of adjusting the depth of the cutting blade are arranged, the problem that the traditional cable stripper can only strip the sheath of a cable of specific diameter is solved, and a cable can be cut without applying a pressure to the cutter head or pulling the cable. A device which can be fixed on a work bench is arranged, and a user only needs to pull a cable when cutting the sheath of the cable.

The optical fiber coupler array can be capable of providing a low-loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array can be configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing. Advantageously, the refractive indices and sizes of both inner and outer core, and/or other characteristics of vanishing core waveguides in the optical coupler array can be configured to reduce the back reflection for light propagating from the plurality of the optical fibers at the coupler first end to the optical device at the coupler second end, and/or vice versa.

A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.

The invention is a waveguide structure (10) that includes two waveguides (90, 94) flanking a coupling region (92) whose effective refractive index is less than those of the waveguides. Outboard of the waveguides are bounding regions (88, 96) whose effective refractive indices decrease inwards adiabatically at the proximal and distal ends of the bounding regions. The waveguides are coupled optically by periodic perturbations of the waveguide geometry, or by reversible uniform or periodic perturbations of the effective refractive indices. In an optical switch matrix based on the waveguide structure, all the waveguides are straight and parallel. A second aspect of the invention is a directional coupler comprising mechanisms for reversibly and quasiperiodically perturbing the effective refractive indices of the waveguides. The respective envelope functions vary monotonically in opposite senses. Light propagating in one waveguide, in the direction in which that waveguide's envelope function increases, is coupled into the other waveguide.

A method for fabricating an optical fiber impulse sensor having an optical fiber and a molded portion molded around the perimeter of the optical fiber. The method forms, in the molded portion, an optical fiber insertion hole and an optical fiber insertion slit for inserting the optical fiber into the optical fiber insertion hole. The method inserts the optical fiber from the slit into the optical fiber insertion hole.

Disclosed is a method of fabricating a multi-layered PCB, in which the optical waveguide component is inserted into the PCB in such a way that a prepreg adhesive does not block an optical signal entrance of the optical waveguide. The method comprises pre-routing a portion of an adhesive meeting the optical waveguide to remove said portion, processing an adhesive weeping prevention layer so as to prevent the adhesive from blocking the optical signal entrance of the optical waveguide, arranging the optical waveguide, the adhesive, and the adhesive weeping prevention layer on a copper clad laminate, and combining the optical waveguide, a prepreg, and the adhesive weeping prevention layer with each other into a single structure. The adhesive weeping prevention layer is selected from the group consisting of a prepreg, a single-sided copper clad laminate, a thermally curable resin, a heat spreader, and an unclad.

Advantageously, at least one embodiment comprises a flexible pitch reducing optical fiber array (PROFA) coupler capable of maintaining all channels discretely with sufficiently low crosstalk, while providing enough flexibility to accommodate low profile packaging, and having increased stability with respect to environmental fluctuations, including temperature variations and mechanical shock and vibration, and that is combinable in multiple quantities thereof to form an optical multi-port input/output (IO) interface.

The invention provides an optical transceiver module which comprises optical fiber and an optical fiber locating structure fixing the optical fiber. The optical fiber locating structure comprises a first locating part fixing the optical fiber, and a first supporting part fixing the first locating part to a shell. The first locating part comprises a first end face, a second end face and a first through hole, wherein the first end face and the second end face are arranged oppositely, and the through hole is used for being communicated with the first end face and the second end face. The aperture of the first through hole is equal to the diameter of the optical fiber. The optical fiber is fixed into the first through hole. The first supporting part is provided with a containing part containing the first locating part. The first locating part is fixed to the containing part. Compared with the prior art, the optical transceiver module comprises the optical fiber locating structure which is more reasonable, and the optical fiber can be located more accurately in the optical transceiver module; furthermore, the stability of transmission of the light path in the optical transceiver module with the optical fiber locating structure is improved.

The waveguide-type optical device comprises a optical transmission element 12, an optical waveguide 20 optically connected to the optical transmission element, and a slab optical waveguide 30 formed of an electrooptic material and optically connected to the optical waveguide 20. In the waveguide-type optical device, a mode field width of the optical waveguide 20 has a value which is between a mode field width of the optical transmission element and a mode field width of the slab optical waveguide, whereby the connection loss between the optical transmission element 12, such as an optical fiber, etc. and the slab optical waveguide 30 can be small.