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

A Polarization-Maintaining Optical Fiber Used in Multiple Bands

A polarization-maintaining optical fiber and multi-band technology, applied in multi-layer core/clad optical fiber, polarized optical fiber, clad optical fiber, etc., to achieve the effects of improving reliability, improving crosstalk stability, and reducing splicing loss

Active Publication Date: 2020-09-15
FENGHUO COMM SCI & TECH CO LTD +2
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polarization-maintaining fiber does not have this type of thin-diameter polarization-maintaining fiber product support, and related technology development is needed

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
  • A Polarization-Maintaining Optical Fiber Used in Multiple Bands
  • A Polarization-Maintaining Optical Fiber Used in Multiple Bands
  • A Polarization-Maintaining Optical Fiber Used in Multiple Bands

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0048] see figure 1 As shown, the embodiment of the present invention provides a multi-band polarization-maintaining fiber, which includes an elliptical germanium-doped core layer 1, a circular germanium-doped core layer 2, a circular The fluorine-doped cladding 3 and the quartz cladding 4, the centers of the annular germanium-doped core 2 and the annular fluorine-doped cladding 3 coincide with the center of the elliptical germanium-doped core 1;

[0049] see figure 2 As shown, the refractive index n of the elliptical germanium-doped core layer 1 1 Greater than the refractive index n of the circular germanium-doped core layer 2 2 ;

[0050] see figure 2 As shown, along the minor axis direction of the elliptical germanium-doped core layer 1, the shape of the refractive index profile of the annular germanium-doped core layer 2 includes a ...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
splice lossaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polarization-maintaining optical fiber used in multiple bands, which comprises an elliptical germanium-doped core layer, an annular germanium-doped core layer, an annular fluorine-doped cladding layer and a quartz cladding layer, which are sequentially arranged from inside to outside. The centers of the annular germanium-doped core layer and the annular fluorine-doped cladding layer coincide with the center of the elliptical germanium-doped core layer; the refractive index of the elliptical germanium-doped core layer is greater than that of the annular germanium-doped core layer the refractive index of the core layer; along the short axis direction of the elliptical germanium-doped core layer, the shape of the refractive index profile of the annular germanium-doped core layer includes a parabola and a horizontal straight line that are arranged and connected from the inside to the outside, Along the long axis direction of the elliptical germanium-doped core layer, the refractive index profile of the annular germanium-doped core layer is a horizontal straight line; the cut-off wavelength of the polarization-maintaining fiber is less than 830 nm. The invention can be applied to 850nm, 1310nm and 1550nm wavelengths, realizes multi-type fiber optic gyroscope winding, not only has good bending resistance, but also has good welding performance, good attenuation and crosstalk stability.

Description

technical field [0001] The invention relates to the technical field of polarization-maintaining optical fibers, in particular to a polarization-maintaining optical fiber used in multiple bands. Background technique [0002] Inertial technology is the key technology of directional navigation and an indispensable key technology in the field of aerospace and national defense. Compared with other types of gyroscopes, fiber optic gyroscopes have the advantages of short start-up time, no active components, and strong environmental adaptability. In recent years, fiber optic gyroscopes have developed very rapidly and have become one of the main directions in the inertial field. [0003] In recent years, many fields such as aerospace, aviation, shipbuilding, national defense, high-speed rail, and oil wells have put forward urgent demands for technological progress in high-precision and miniaturization of fiber optic gyroscopes. Fiber optic gyroscopes based on the Sagnac effect use p...

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): G02B6/024G02B6/036
CPCG02B6/024G02B6/036
Inventor 罗文勇何茂友柯一礼张涛李伟杜城邵帅朱侨曾凡球胡宗华
Owner FENGHUO COMM SCI & TECH CO LTD
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com