39results about How to "Light transmission loss is small" patented technology

An optical device mounted substrate assembly includes a ceramic substrate having a first recess, an optical device mounted on the ceramic substrate and having one of a light emitting portion and a light receiving portion, the optical device being to be optically connected to one of an optical waveguide and an optical fiber connector in way as to align optical axes of the optical wave guide or the optical fiber connector with each other, a resin layer disposed in the first recess and having a second recess smaller in diameter than the first recess, and an alignment guide member fitted in the second recess and having a protruded portion protruding from a front surface of the ceramic substrate and fittingly engageable in an alignment hole of one of the optical waveguide and the optical fiber connector. A fabrication method of such a substrate assembly is also provided.

The invention discloses a waveguide Bragg grating based on a SiO2 strip-loaded waveguide and a manufacturing method thereof. The waveguide Bragg grating comprises a substrate layer, a flat core layer, a guide core layer and an upper coating, wherein the flat core layer covers the front side of the substrate layer, the guide core layer is positioned on the front side of the flat core layer, and the upper coating covers the front side of the flat core layer and wraps the guide core layer. The waveguide Bragg grating has the advantages of simplicity in process, low cost, good consistency, large-scale production and the like; and compared with a manufacturing process of an outer ridge modulation type waveguide Bragg grating based on a ridge waveguide, the manufacturing method has the advantages that the process is simple, the cost is low, the size is small and the like.

The invention discloses an all-optical modulator apparatus based on black phosphorus. The apparatus includes a pumped laser source, a direct current continuous laser source, a reflector, a dichroic laser beam combiner, a convex lens, a micro nano optical fiber, the black phosphorus, and a bandpass optical filter. The black phosphorus of the invention has good saturated absorption characteristic of spectra from visible light to near infrared light, and can work in a broadband spectrum range. The all-optical modulator apparatus based on the black phosphorus employs the all-optical modulation, overcomes the problem of modulation speed bottleneck of the electro-optical modulation, and has the advantages of the fast optical modulation speed, the low power consumption, the high modulation depth, and compatibility with an optical fiber system.

An inventive opto-electric hybrid board includes: opto-electric module portions respectively provided on opposite end portions of an elongated insulation layer and including a first electric wiring of a first electrically conductive pattern and an optical element provided on a front surface of the insulation layer; and an interconnection portion provided on a portion of the insulation layer extending from the opto-electric module portions, and including an elongated optical waveguide on a back surface of the insulation layer optically coupled with the optical elements, and having a light signal transmission core. Further, an electrically conductive dummy pattern is provided on the front surface of the insulation layer in the interconnection portion for reinforcing the interconnection portion. The electrically conductive dummy pattern reinforces the interconnection portion to protect the waveguide from bending and twisting, while ensuring the flexibility of the interconnection portion. This suppresses increase in light transmission loss.

The invention relates to a fiber bragg grating pressure sensor used in a high-temperature high-voltage environment. The fiber bragg grating pressure sensor comprises a packaging casing, an elastic body and a fiber bragg grating sensing device, wherein the elastic body and the fiber bragg grating sensing device are arranged in the packaging casing, the elastic body is made from a metal based composite material, the fiber bragg grating sensing device comprises a pressure sensitive optical grating, the pressure sensitive optical grating is embedded into the elastic body, and the surface of the pressure sensitive optical grating is coated with a metal material. The high-voltage and high-temperature resisting performance of the fiber bragg grating pressure sensor can be improved to the great extent, the fiber bragg grating pressure sensor has the advantages of being high in strength, modulus and measurement accuracy. The invention further relates to a manufacturing method of the fiber bragg grating pressure sensor used in the high-temperature high-voltage environment.

The invention discloses an ultrafast time domain stretching imaging device and method, and belongs to the technical field of high speed imaging. Plano-convex lenses are used to change the gathering size and angle of spatial coded pulses in a space in front of a fifth plano-convex lens, the fifth plano-convex lens further gathers light spots into an effective light reception range of a high-speed free space photoelectric detector, and the problem that a time domain stretching based ultrafast imaging device in the prior art has high light pulse transmission loss and is difficult in operation issolved. The imaging device and method of the invention is simple in operation and lower in light transmission loss, can effectively improve the signal to noise ratio of a corresponding system and achieve higher image quality.

The invention provides an electro-optical crystal film, a preparation method thereof and an electro-optical modulator, and the electro-optical crystal film sequentially comprises a silicon substrate layer, a silicon dioxide layer, a silicon waveguide layer, a coating isolation layer and a functional film layer from the bottom to the top. The refractive index of the coating isolation layer is lowerthan that of the functional film layer, and the coating isolation layer is subjected to planarization processing and can be bonded with the functional film layer. The coating isolation layer is adopted to replace an adhesive layer in the prior art, on one hand, the coating isolation layer can be subjected to planarization processing, the surface roughness of the side, close to the functional filmlayer, of the coating isolation layer is reduced, diffuse reflection can be reduced, and therefore light transmission loss is reduced; and on the other hand, the coating isolation layer and the functional film layer are combined in a bonding manner, so that the uniformity and the integrity of the functional film layer are ensured.

The invention provides an organic electroluminescence device. The organic electroluminescence device comprises a glass substrate, and an anode, a scattering layer, an organic light-emitting functional layer and a cathode which are sequentially arranged on the glass substrate in a stacked manner; the scattering layer comprises a first doped layer, a ferric salt layer and a second doped layer which are sequentially arranged on the anode in a stacked manner; the first doped layer is made of a mixed material of an organic material and ferric salt, and the second doped layer is made of a mixed material of the organic material and titanium dioxide; the organic material is one of 2, 3, 5, 6-tetrafluoro-7, 7, 8, 8, -tetracyano-benzoquinodimethane, 4, 4, 4-tri(naphthyl-1-phenyl-ammonio) triphenylamine and dinaphthyl-N, N'-diphenyl-4, 4'-benzidine. The scattering layer is additionally arranged in the structure of the organic electroluminescence device, so that the light-emitting efficiency and the luminous efficiency of the device can be improved. The invention also provides a manufacturing device of the organic electroluminescence device.

A surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering mainly comprises a metal (silver) substrate 1 carved with a V groove; a layer of silica medium membrane 2 is coated on each of the two inner walls of the V groove on the silver substrate 1; and a whole optical waveguide is surrounded by an air layer 3. The width of the V groove is W; the thickness of the silica membrane on the top of the V groove is t; and the angle of the V groove is alpha and theta.

The invention provides a liquid core hydrogel optical fiber, a preparation method and application of the liquid core hydrogel optical fiber, a liquid core hydrogel optical fiber probe sensor and application of the liquid core hydrogel optical fiber probe sensor, and belongs to the technical field of optical fibers. The liquid core hydrogel optical fiber provided by the invention comprises a hollow hydrogel fiber core, a liquid core located in the hollow hydrogel fiber core, and a hydrogel wrapping layer wrapping the surface of the hollow hydrogel fiber core, the two ends of the hollow hydrogel fiber core are provided with UV glue seals. Light energy of the liquid core hydrogel optical fiber is mainly distributed in a liquid core in a concentrated mode, locality is good, light transmission loss is low, collection efficiency is high, and detection sensitivity is high. The liquid core is eluted or replaced to realize reutilization, so that the reutilization rate is high; by changing the type of the sensing liquid core or the light transmission liquid core in the liquid core, detection of various substances can be realized, and the liquid core is good in flexibility, high in expandability and wide in application field, and has a good application prospect in the aspect of detection of metal ions, medicines and biotoxins.

The invention relates to a semiconductor laser light source module based on a planar waveguide combiner, and the module comprises a bearing substrate which is provided with N electrodes; N semiconductor lasers, wherein bare chips on the semiconductor lasers are respectively bonded with the corresponding electrodes through leads; an optical waveguide combining structure sequentially comprising a waveguide layer, a reflection dielectric layer and a bonding layer from top to bottom; the waveguide layer being provided with a waveguide circuit pattern, the waveguide circuit pattern comprising N light inlets and one light outlet, and the N light inlets being in one-to-one correspondence with light outlet points of bare chips on the N semiconductor lasers; and a covering box. The invention further provides two manufacturing methods of the semiconductor laser light source module based on the planar waveguide combiner. According to the semiconductor laser light source module based on the planar waveguide type combiner provided by the invention, the large-aperture waveguide is prepared by a method of directly etching on the wafer, so that the laser coupling difficulty is greatly reduced, and the size of a device is greatly reduced.

The invention discloses a spot-size converter and a silicon optical integrated chip. The spot-size converter has a first end surface optically coupled with an external optical fiber and a second end surface optically coupled with an external optical device, and the spot-size converter comprises a first optical waveguide and a second optical waveguide, wherein the first optical waveguide comprises a first wedge-shaped structure and a second wedge-shaped structure, and the first wedge-shaped structure and the second wedge-shaped structure face opposite directions; and the second optical waveguide comprises a third wedge-shaped structure, and the tip of the third wedge-shaped structure faces the first wedge-shaped structure and is at least partially overlapped with the second wedge-shaped structure. By designing a special waveguide coupling structure, the mode matching degree of the spot-size converter and the external optical fiber is improved, the polarization dependent loss between the two optical waveguides in the spot-size converter is reduced, and the thermal stability of the optical waveguides in the silicon optical integrated chip is improved, so that the optical transmission loss in the silicon optical integrated chip is reduced.

Provided are: a prepolymer which is capable of forming a non-linear optical material that has excellent non-linear optical effect, heat resistance, withstand voltage and transparency; a curable material which contains the prepolymer; a coating composition which contains the curable material and a solvent; a non-linear optical material which is obtained by curing the curable material; an optical waveguide which uses the non-linear optical material; and a light control device which is provided with the optical waveguide. The present invention uses a prepolymer having a crosslinkable functional group, which is obtained by reacting one or more compounds (X) that are selected from the group consisting of compounds (X1), compounds (X2) and compounds (X3), a compound (Y) that is represented by formula (Y), a compound (Z) that has three or more phenolic hydroxyl groups, and an organic compound (B) that exerts a non-linear optical effect and has a reactive group.

The invention relates to an electron-photon double transmission microstructure polymer fiber which can transmit electrons and photons, the technology resolving program is that: the polymer fiber includes matrix (1), inner cladding (5) and outer cladding (4), the fiber matrix (1) is equipped in the outer cladding (4), the inner cladding (5) is equipped in fiber matrix (1), the inner cladding (5) is composed of air channel, the inner surface of the air channel (2) is equipped with conducting layer (3). It has advantages of integral mechanic structure, which can be produced in large-scale and at the same time can transmit electros and photons.

A method for manufacturing an optical waveguide of the present invention is one in which a mask is provided on the surface of a core layer followed by performing dry etching, and the dry etching step includes etching and ashing steps. With this, the irregularities formed on the periphery of a core pattern during manufacture of an optical waveguide can be eliminated, and an optical waveguide with a low optical transmission loss is proved.

The invention aims to provide a method by which a solution of polyimide can be easily obtained. Further, the invention aims to provide a fluorinated polyimide solution by which fluorinated polyimide excellent especially as an optical material and an electronic functional material can easily be produced. The production method of the soluble polyimide solution according to invention is characterized by mixing a mixture containing a polyamide acid, a cyclodehydration reagent, and a solvent by a rotation-revolution mixing method. Further, the fluorinated polyimide solution of the invention is a solution of polyimide defined by the following formula (II):

wherein, X and Y independently represent divalent organic groups; Z represents chlorine atom, bromine atom, or iodine atom; p represents an integer of 1 to 3; q represents an integer of 0 to 2; and p+q=3.