Single-mode multimode mode adjusting device and preparation method thereof

A single-mode, mode-tuning technology, applied in the field of optical fiber, can solve the problem of low cost

Pending Publication Date: 2021-12-21
JIANGSU HENGTONG OPTICAL FIBER TECH +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no effective and low-cost technical means have been found to realize data center high-speed transmission between single-mode and m

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-mode multimode mode adjusting device and preparation method thereof
  • Single-mode multimode mode adjusting device and preparation method thereof
  • Single-mode multimode mode adjusting device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0086] The invention discloses a method for preparing a single-mode and multi-mode mold adjusting device, which comprises the following steps:

[0087]1) Preparation of tapered fiber: According to the diameter and refractive index parameters of multimode fiber 1 and single-mode fiber 2, select an appropriate fiber to prepare tapered fiber 3, such as multi-clad 50 / 70 / 250 μm fiber, double-clad 50 / 250 μm specification optical fiber, etc., generally the fiber core diameter of the tapered optical fiber 3 is not smaller than the core diameter of the multimode optical fiber 1 . According to Marcuse's theoretical calculation, the tapered fiber 3 needs to be tapered to match the fiber core of the single-mode fiber 2, and the tapered ratio and tapered length are required. The fusion taper equipment of a single large-diameter optical fiber, such as domestic and imported taper machines, can be completed. The specific steps are:

[0088] After the tapering machine is turned on, the burner...

Embodiment 1

[0097] A test schematic diagram of a single-mode multi-mode modulating device is shown in image 3 As shown, the arrow indicates the direction of signal transmission.

[0098] Self-made 300m OM3 multimode fiber 1 is used as the link for multimode transmission, and the length of single-mode fiber 2 is 2m. The multi-mode OM3 transmission loss is about 2.3dB / km@850nm, 0.6dB / km@1310nm, and it is also compatible with single-mode 1310nm and 1550nm band signal transmission. The main transmission characteristics of multimode fiber are shown in Table 1 and Table 2.

[0099] The tapered fiber 3 uses a 50 / 250μm double-clad fiber, and its core diameter matches that of the multimode fiber 1. It only needs to be melted and tapered once. According to Marcuse's effective mode field diameter theory, the tapered fiber 3 needs to be prepared The corresponding fiber diameter is 9 / 45μm. The 9 / 45μm taper region of the tapered fiber 3 is fused with the single-mode fiber 2, and the 50 / 250μm double...

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
Outer diameteraaaaaaaaaa
Inner diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a single-mode multimode mode adjusting device and a preparation method thereof, the single-mode multimode mode adjusting device comprises a multimode optical fiber, a single-mode optical fiber and a tapering optical fiber, and two opposite ends of the tapering optical fiber are respectively connected with the multimode optical fiber and the single-mode optical fiber in a low-loss fusion manner. Signal transmission transition of the single-mode optical fiber and the multimode optical fiber is achieved in an optical fiber tapering mode, the diameter of a fiber core in a tapering area of the tapering optical fiber is in smooth gradual transition, mode field distortion does not exist, and transmission loss is effectively reduced; a signal in the single-mode optical fiber is transmitted into the multimode optical fiber through a low-order mode/high-order mode excited by the tapering optical fiber in a low-loss manner; the mode field excited by the single-mode optical fiber is transmitted in the multimode optical fiber and is transmitted to the single-mode optical fiber from the tapering optical fiber in a gradual transition manner, and the loss is within 0.5 dB; the welding loss of the optical fiber can be lower than 0.1 dB at present; and a support is provided for the single-mode optical module of the data center to be directly accessed into the multimode optical fiber for transmission through the single-mode optical fiber.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and in particular relates to a single-mode and multi-mode mode-adjusting device and a preparation method thereof. Background technique [0002] In the field of optical communication and data transmission, the most commonly used transmission link is optical fiber transmission, which has the advantages of large capacity, fast speed, good stability, high cost performance, and low energy consumption. There are two types of optical fiber transmission: single-mode optical fiber and multi-mode optical fiber. [0003] At present, the diameter parameter of single-mode fiber (SMF: Single-Mode Fiber) is generally 9 / 125 μm. The operating wavelength of the single-mode optical module is generally 1310nm, 1550nm. The light source of the single-mode optical module is LD or LED with a narrow spectral line, which is mainly used for long-distance communication. The main application optical module is DFB (Di...

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
IPC IPC(8): G02B6/26G02B6/293G02B6/12G02B6/14
CPCG02B6/26G02B6/29379G02B6/12G02B6/14G02B2006/12152
Inventor 孙伟黄秋实郭洁郝昌平朱永刚严勇虎贺作为宋君陈伟
Owner JIANGSU HENGTONG OPTICAL FIBER TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap