Unlock instant, AI-driven research and patent intelligence for your innovation.

An Encoder Based on Sagnac Fiber Ring and Two-Photon Absorption Limiter

A two-photon absorption and optical fiber ring technology, applied in the field of optical information, can solve problems such as difficult to overcome slippage, low sampling rate and effective input bandwidth, and small size, and achieve strong operability, low input signal optical power, and system structure simple effect

Active Publication Date: 2019-12-17
INNO LASER TECH CORP LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The commonly used encoders are photoelectric encoders and magnetostatic grid absolute encoders. The most commonly used ones are photoelectric encoders, which have the advantages of small size, precision, high resolution, no contact and no wear, and the same type can be detected Angle displacement can also detect linear displacement with the help of mechanical conversion device; multi-turn photoelectric absolute encoder can detect linear displacement with a long range (such as 25-bit multi-turn); but there are also the following disadvantages: precise but not suitable for outdoor and harsh environments High protection requirements are put forward for the use under the environment; the measurement of linear displacement needs to rely on the conversion of mechanical devices, and the error caused by mechanical clearance needs to be eliminated; it is difficult to overcome the slippage when detecting orbiting objects
While traditional encoders have low sampling rate and effective input bandwidth

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An Encoder Based on Sagnac Fiber Ring and Two-Photon Absorption Limiter
  • An Encoder Based on Sagnac Fiber Ring and Two-Photon Absorption Limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a kind of encoder based on Sagnac (Sagnac is the Sagnac effect) fiber optic ring and two-photon absorption effect, including sequentially connected optical sampler 2, Sagnac fiber ring, multi-port optical coupler 5-1, dual Optical limiter 6-1 and decision device 7-1 of photon absorption effect; wherein, optical sampler is used for linear sampling to obtain discrete input signal light; Sagnac fiber ring is used for receiving input signal light; multi-port optical coupler , let the low-power signal light flow out of the cross-arm port, and pass the high-power signal light into the straight-through arm port; the optical limiter with two-photon absorption effect limits the optical power of the output signal at the straight-through arm port, and outputs a fixed value; judgment The device is used to encode a fixed value and output a digital signal.

[0027] The Sagnac fiber ring in the above scheme, multi-port optical coupler 5-1, optical limiter 6...

Embodiment 2

[0034] A kind of encoder based on Sagnac (Sagnac is the Sagnac effect) fiber optic ring and two-photon absorption effect, comprising sequentially connected optical sampler 2, the first Sagnac fiber ring (4-1, 4-2, 4-3 connected in series), the first multi-port optical coupler 5-1, the optical limiter 6-1 of the first two-photon absorption effect, the first decision device 7-1, the second Sagnac fiber ring (4-4 , 4-5 series connection), the second multi-port optical coupler 5-2, the optical limiter 6-2 of the second two-photon absorption effect, the second decision device 7-2; the optical sampler 2 and the first optical fiber ring Between 4-1, between any two of the three first optical fiber rings 4-1, 4-2, and 4-3 respectively through the first optical circulator 3-1, the first optical circulator 3-2, the first The optical circulator 3-3 realizes the connection; between the second optical fiber ring 4-4 ​​and the first optical circulator 3-1, between the second optical fiber r...

Embodiment 3

[0039] Different from Embodiment 2, the encoder in this embodiment also includes a third optical circulator 3-6, a third Sagnac fiber ring 4-6, and a third multi-port optical coupler 5-3 connected in series, The optical limiter 6-3 of the third two-photon absorption effect, the third decision device 7-3, the third optical circulator 3-6 are connected with the second optical circulator 3-4 and the second optical circulator 3-5 .

[0040] A delayer Delayer 8-3 is provided at the output end of the third decision unit 7-3, so that the output signals of the two lines where the delayer Delayer 8-1 and the delayer Delayer 8-2 are located can reach the receiving end at the same time.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an encoder based on a Sagnac optical fiber ring and a two-photon absorption effect limiter. The encoder comprises a light sampler which is used for performing linear sampling for obtaining discrete input signal light; the Sagnac optical fiber ring which receives the input signal light; a multi-port optical coupler which discharges the low-power signal light out of an intersecting arm port and introduces high-power signal light into a straight arm port; the two-photon absorption effect limiter which limits the optical power of the signal that is output from the straight arm port and outputs a fixed value; and a decision device which performs coding on the fixed value and outputs a digital signal. The encoder has advantages of low power of the input signal light, simple system structure, high operability, etc.

Description

technical field [0001] The invention belongs to the technical field of optical information, and in particular relates to an encoder based on a Sagnac fiber ring and a two-photon absorption effect limiter. Background technique [0002] An encoder is a device that compiles and converts signals (such as bit streams) or data into signal forms that can be used for communication, transmission and storage. It is a rotary sensor that converts rotational displacement into a series of digital pulse signals. A device that converts angular displacement or linear displacement into an electrical signal. [0003] The commonly used encoders are photoelectric encoders and magnetostatic grid absolute encoders. The most commonly used ones are photoelectric encoders, which have the advantages of small size, precision, high resolution, no contact and no wear, and the same type can be detected Angle displacement can also detect linear displacement with the help of mechanical conversion device; m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/353G02B6/26
CPCG01D5/35322G02B6/26
Inventor 李齐良徐杰陈浩文李志鹏胡淼唐向宏曾然周雪芳卢旸魏一振
Owner INNO LASER TECH CORP LTD