13 results about "Fiber coil" patented technology

System for manufacturing a fiber optic coil of a gyroscope including a mandrel with relative actuation for forward and reverse rotation, a robotic arm equipped with a first nib, in the terminal part, in which the first nib has an elongated and partially flexible shape to guide the positioning of the optical fiber during its winding on the mandrel, one more optical mechanisms arranged to continuously acquire images of the coil during the winding process, a processor operationally connected with the robotic arm, with the one or more optical mechanisms and with the actuator of the rotation of the mandrel, in which the processor is configured to control the robotic arm and to define a mechanism for controlling the actuator of the mandrel rotation as a function of the continuously acquired images, so as to control the manufacturing of the optical fiber coil.

Disclosed herein are optical amplifier devices, optical amplifier assembly, and optical amplifier systems. Example embodiments may include: a plurality of input optical ports, each being configured to receive one of a plurality of input optical signals; a plurality of output optical ports, each being configured to output one of a plurality of output optical signals; a plurality of tap photodiodes, each respectively being connected to one of the plurality of input optical ports and the plurality of output optical ports; a wavelength division multiplexer configured to receive the input optical signal from each of the plurality of input optical ports and an optical input from a laser pump device and output a plurality of pumped optical signals; a plurality of erbium-doped fiber coils, each having a first end configured to receive one of the plurality of pumped optical signals and a second end configured to output an amplified optical signal; and an optical isolator configured to receive, for each of the plurality of erbium-doped fiber coils, the amplified optical signal and output the plurality of output optical signals, wherein the plurality of output optical ports are configured to receive one of the plurality of output optical signals.

The utility model discloses a general type optical cable junction box inner bag, its characterized in that: still include the multifunctional installation area of installing on the inner bag main part, install the combined type optical cable fixed area of the inner bag main part below, the multifunctional installation area include the insert piece type shunt ware installation frame or the excess fiber coiling device of installing on the crossbar, through the setting of multifunctional installation area, can choose the installation insert piece type shunt ware installation frame or the excess fiber coiling device flexibly, when installing insert piece type shunt ware installation frame, optical cable junction box is insert piece type optical cable junction box, when installing excess fiber coiling device, optical cable junction box is traditional type optical cable junction box or box type optical cable junction box, satisfy the optical fiber deployment demand under different scenes, increase the versatility of inner bag main part, same pair of inner bag main part, only need to change multifunctional installation area to can carry out different models, convenient for the reserve and management of spare parts.

The present application relates to the technical field of optical gyroscopes, and specifically relates to a resonant fiber-optic gyroscope driven by a low-power broadband light source and a working method thereof. The fiber-optic gyroscope comprises an ASE light source, a circulator, a Y waveguide, a fiber resonant cavity, a first coupler, a second coupler, a photoelectric detector, and a signal processing unit. The ASE light source is connected to the circulator, and the circulator is connected to the input port of the Y waveguide and the photoelectric detector. The first coupler and the second coupler each have four ports. The Y waveguide is connected to port 1 of the first coupler and port 1 of the second coupler. The fiber resonant cavity is composed of the first coupler, the second coupler, and a section of fiber coil. Port 2 of the first coupler and port 2 of the second coupler are through-arm ports, and port 2 of the first coupler and port 2 of the second coupler are connected by means of 90° polarization axis rotation fusion splicing polarization maintaining optical fiber. The present application can significantly improve the utilization rate of the light source, effectively improve the stability and sensitivity of the system, and has significant engineering application potential.

The present application relates to the technical field of papermaking, in particular to a kind of optical fiber coil fixed glue paper and its preparation method and application.The preparation raw material of the optical fiber coil fixed glue paper provided by the present application includes fiber and auxiliary agent;The fiber includes plant fiber 40-100%, natural cellulose fiber 0-40%, and chemical synthetic fiber 0-20% by mass percentage;The auxiliary agent includes wet strength agent and defoaming agent.The optical fiber coil fixed glue paper provided by the present application has low basis weight, has less influence on the thickness of optical fiber coil, has good glue absorption, has moderate strength, meets cutting requirements, is convenient to tear when winding coil, and because the fixed glue paper is relatively soft, can absorb part of the stress of solidified glue, has better temperature stability and anti-vibration performance, plays an important role in improving the overall precision and application level of optical fiber gyroscope.

Provided in the present disclosure is a smart home gateway, comprising: an outer housing, which comprises a first cover plate, a first connecting plate and a second cover plate, one side of the first cover plate being connected to a first connecting plate, one side of the second cover plate being connected to the first connecting plate, a gap being formed between the first cover plate and the second cover plate, and an opening being formed in a lateral side of the gap; and an inner housing, which is embedded in the gap and is covered by the first cover plate and the second cover plate, wherein the inner housing is detachably connected to the outer housing, and enters and exits the gap through the opening; and a fiber coiling mechanism is formed on one side of the inner housing, and is used for coiling of an optical fiber. The optical fiber is located inside the smart home gateway and disposed close to the center of gravity of the smart home gateway, such that after the optical fiber is coiled in the smart home gateway, the stability of the smart home gateway remains unchanged, and the smart home gateway can be disposed stably in a vertical or horizontal configuration. In addition, the inner housing is detachably connected to the outer housing, making it convenient for the optical fiber to be coiled around the fiber coiling mechanism.

A fiber-based optical amplifier is formed to exhibit a reflective architecture in a particular configuration where a single pump source is shared among several individual reflective amplifier elements. A passive, non-variable power splitter is used to direct sub-beams of sufficient power into the rare-earth doped fiber contained within individual amplifiers. Since the reflective architecture results in an optical signal passing through the doped fiber coil (gain medium) twice, a lower pump power (compared to a conventional single-pass structure) may be used to obtain the same target output power level and the single pump source is considered as sufficient to provide enough output power to pass through a power splitting arrangement and deliver enough pump power to provide amplification of a propagating optical signal in each of the individual amplifiers.

Disclosed herein are optical amplifier devices, optical amplifier assembly, and optical amplifier systems. Example embodiments may include: a plurality of input optical ports, each being configured to receive one of a plurality of input optical signals; a plurality of output optical ports, each being configured to output one of a plurality of output optical signals; a plurality of tap photodiodes, each respectively being connected to one of the plurality of input optical ports and the plurality of output optical ports; a wavelength division multiplexer configured to receive the input optical signal from each of the plurality of input optical ports and an optical input from a laser pump device and output a plurality of pumped optical signals; a plurality of erbium-doped fiber coils, each having a first end configured to receive one of the plurality of pumped optical signals and a second end configured to output an amplified optical signal; and an optical isolator configured to receive, for each of the plurality of erbium-doped fiber coils, the amplified optical signal and output the plurality of output optical signals, wherein the plurality of output optical ports are configured to receive one of the plurality of output optical signals.

This invention belongs to the field of fiber optic sensing and recognition technology, specifically an object shape recognition system based on machine learning and fiber optic microphone arrays. The system includes a measurement optical path based on a single-core feedback Sagnac fiber optic interferometer, a microphone array sensor composed of multiple fiber optic coils (a component of the optical path), an obstacle movement device, a sound source, and a signal processing unit. By sensing sound signals through the fiber optic microphone array and extracting time-frequency features using a short-time Fourier transform algorithm, combined with a ResNet50 convolutional neural network or a support vector machine (SVM) algorithm, it achieves the recognition of obstacles of different shapes and types in the sound field. This system possesses advantages such as strong anti-electromagnetic interference capability, high sensitivity, low distortion over long distances, small size, and high recognition accuracy.

A fiber optic gyroscope includes an optical fiber coil, optical circuit, and optical gate. The optical circuit receives input optical signals generated by an optical source, splits each input optical signal into first and second optical signals, phase modulates one or both of the first and second optical signals, transmits the first and second optical signals to the optical fiber coil such that the first and second optical signals counterpropagate through the optical fiber coil, receives the first and second optical signals after counterpropagating through the optical fiber coil, combines the first and second optical signals after counterpropagating through the optical fiber coil, and transmits the combined first and second optical signals to a photodetector. The optical gate controllably time modulates the input optical signals and / or the first and second optical signals prior to being combined, said time modulating synchronized with said phase modulating.