Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single-polarization transmission type photonic crystal fiber resonant cavity

A photonic crystal fiber and transmissive technology, which is applied in the field of light interference and optical sensing, can solve problems such as poor polarization extinction ratio, limited gyroscope performance, and large polarization noise, so as to improve polarization extinction ratio, reduce process difficulty, and overall Effect of Loss Reduction

Active Publication Date: 2017-08-11
BEIHANG UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large polarization crosstalk transmitted by photonic crystal fiber, the overall polarization extinction ratio of the existing photonic crystal fiber resonator is poor, which will introduce a huge polarization noise, which limits the further improvement of gyroscope performance

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
  • Single-polarization transmission type photonic crystal fiber resonant cavity
  • Single-polarization transmission type photonic crystal fiber resonant cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The invention is a single polarization transmission photonic crystal fiber resonator, such as figure 1 , figure 2 As shown, it includes a first fiber collimator 1, a second fiber collimator 2, a first photonic crystal fiber collimator 3, a second photonic crystal fiber collimator 4, a birefringent beam splitter 5, and a fixing device 6;

[0020] The first optical fiber collimator 1, the second optical fiber collimator 2, the first photoni...

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 a single-polarization transmission type photonic crystal fiber resonant cavity comprising a first optical fiber collimator, a second optical fiber collimator, a first photonic crystal fiber collimator, a second photonic crystal fiber collimator, a double-refraction optical beam splitter, and a fixation device. According to the invention, when a resonant cavity is built, a birefringent crystal is used for manufacturing the optical beam splitter and o light and e light in incident light are separated, so that the polarization extinction ratio of the resonant cavity is increased and thus the application potential of the photonic crystal fiber resonant cavity in a gyroscopic system can be improved substantially. On the basis of the polarizing design inside the cavity, the requirement on the alignment precision of the polarization axis of the fiber is low and thus the process difficulty of the resonance cavity is reduced substantially. A transmission resonant cavity structure is realized only by using one beam splitter, so that the total losses inside the cavity can be reduced effectively and the definition of the resonant cavity is enhanced. Meanwhile, the overall size of the resonant cavity can be reduced and miniaturization of the gyroscopic system can be realized.

Description

technical field [0001] The invention relates to a single-polarization transmission photonic crystal fiber resonant cavity, which belongs to the technical field of light interference and optical sensing. Background technique [0002] Optical resonators are research hotspots in the fields of lasers, optical sensing, and inertia. One of the key indicators is clarity or quality factor, which often determines the performance of the entire system. In the resonant optical gyroscope, the definition of the passive resonant cavity determines the limit sensitivity of the gyro, and the non-reciprocal error of the transmissive resonant cavity is smaller than that of the reflective resonant cavity. Therefore, the high-definition transmissive resonant cavity is developed The key to high-precision resonant optical gyroscope. [0003] Photonic crystal fibers have many excellent properties, but they are quite different from traditional optical fibers. Developing high-performance photonic cry...

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 Applications(China)
IPC IPC(8): G02B6/28G02B1/00
CPCG02B1/005G02B6/2821
Inventor 冯丽爽焦洪臣马弘昊王锴刘宁
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products