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OAM transmission fiber and manufacturing method thereof

A technology of transmission optical fiber and manufacturing method, applied in the field of OAM transmission optical fiber and its manufacturing, can solve the problems of difficulty in realizing OAM large-capacity transmission, OAM signal transmission mode crosstalk, small transmission capacity, etc., and achieves good optical performance and reliability. Power density, the effect of suppressing signal distortion

Active Publication Date: 2014-08-27
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the dimensions of electromagnetic wave OAM are orthogonal to the dimensions currently used for communication such as frequency, propagation direction, phase, and amplitude, etc., for various types of optical fibers manufactured by existing communication technologies, the light intensity distribution of OAM signals conforms to Gauss-Laguerre beam characteristics, the transmission of OAM signals in the central high-refractive index waveguide structure will cause serious mode crosstalk, and it is difficult to achieve large-capacity transmission of OAM modes
[0006] In 2012, Boston University and the University of Southern California realized the multiplexing of OAM information on a special optical fiber with a length of 1.1km. However, because the transmission mode of the special optical fiber is limited by the fiber waveguide structure, the special optical fiber can only transmit 4 orbital angular momentum modes (i.e. l=4); therefore the transmission capacity of the special optical fiber is relatively small, which is not convenient for people to use

Method used

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  • OAM transmission fiber and manufacturing method thereof
  • OAM transmission fiber and manufacturing method thereof
  • OAM transmission fiber and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0053] According to the opening percentage of the flowmeter, 70% silicon tetrachloride, 20% germanium tetrachloride, 10% phosphorus oxychloride and 5% C 2 f 6 Put it into a quartz tube, and use plasma chemical vapor deposition process to deposit 1500 times to form the outer cladding layer 4 .

[0054] According to the opening percentage of the flowmeter, 70% silicon tetrachloride, 65% germanium tetrachloride and 1% C 2 f 6 Put it into a quartz tube, and use plasma chemical vapor deposition process to deposit 350 times to form an annular core layer 2 .

[0055] According to the opening percentage of the flowmeter, 70% silicon tetrachloride, 20% germanium tetrachloride, 10% phosphorus oxychloride and 5% C 2 f 6 Put it into a quartz tube, and deposit 4750 times by using a plasma chemical vapor deposition process to form a central cladding layer 1 .

[0056] The quartz tube formed with the outer cladding layer 4, the annular core layer 2 and the central cladding layer 1 is pu...

Embodiment 2

[0060] According to the opening percentage of the flowmeter, put 80% of silicon tetrachloride, 10% of germanium tetrachloride and 30% of phosphorus oxychloride into the quartz tube, and use plasma chemical vapor deposition process to deposit 4800 times to form Outer cladding 4.

[0061] According to the opening percentage of the flowmeter, put 30% silicon tetrachloride and 20% germanium tetrachloride into the quartz tube, and deposit 300 times by plasma chemical vapor deposition process to form the annular core layer 2 .

[0062] According to the opening percentage of the flowmeter, put 80% silicon tetrachloride, 10% germanium tetrachloride and 30% phosphorus oxychloride into the quartz tube, and deposit 200 times by plasma chemical vapor deposition process to form Center cladding 1.

[0063] The quartz tube formed with the outer cladding layer 4, the annular core layer 2 and the central cladding layer 1 is put into a high-temperature graphite induction furnace, and the quart...

Embodiment 3

[0067] According to the opening percentage of the flowmeter, 50% silicon tetrachloride, 15% germanium tetrachloride, 12% phosphorus oxychloride and 10% C 2 f 6 Put it into a quartz tube, and use plasma chemical vapor deposition process to deposit 600 times to form the outer cladding layer 4 .

[0068] According to the opening percentage of the flowmeter, 40% silicon tetrachloride, 60% germanium tetrachloride and 10% C 2 f 6 Put it into a quartz tube, and use plasma chemical vapor deposition process to deposit 1200 times to form an annular core layer 2 .

[0069] According to the opening percentage of the flowmeter, 50% silicon tetrachloride, 15% germanium tetrachloride, 12% phosphorus oxychloride and 10% C 2 f 6 Put it into a quartz tube, and use plasma chemical vapor deposition process to deposit 6000 times to form the central cladding layer 1 .

[0070]The quartz tube formed with the outer cladding layer 4, the annular core layer 2 and the central cladding layer 1 is pu...

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Abstract

The invention discloses an OAM transmission fiber and a manufacturing method thereof, which relates to the field of optical fiber communication. The method comprises the following steps: successively forming an external cladding, an annular core layer and a central cladding through deposition by using a plasma chemical vapor deposition process; carrying out melting polycondensation at a temperature of 2000 to 2400 DEG C and then carrying out processing so as to form an OAM transmission fiber preform; and subjecting the OAM transmission fiber preform to wire drawing and coating of an outer coating so as to prepare the OAM transmission fiber. The OAM transmission fiber has an attenuation coefficient of less than 2.0 dB / km at a wavelength of 1550 nm and can support OAM mode transmission of more than + / - 4 orders, and OAM mode coupling is less than -20 dB / km. The OAM transmission fiber can meet requirements of high-capacity transmission of the OAM fiber on the waveguide structure of the fiber and substantially expand OAM mode transmission capacity in the fiber and is convenient to use by people.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to an OAM (Orbital Angular Momentum, orbital angular momentum) transmission optical fiber and a manufacturing method thereof. Background technique [0002] With the progress of society, information technology has become one of the most important sources of productivity for social and economic development. The continuous expansion of information system capacity is an indispensable requirement for the development of social informatization. The development space of information system capacity and unreleased potential information The need is enormous. [0003] In optical fiber system communication, the information carried by photons can be obtained by analyzing and decoding the energy, linear momentum and polarization state of photons. After the capacity of the optical communication system has experienced WDM (Wavelength Division and Multiplexing, wavelength division multiple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/018C03C13/04
CPCC03C13/046C03C3/112
Inventor 杜城陈伟李诗愈莫琦柯一礼罗文勇张涛杜琨但融
Owner FENGHUO COMM SCI & TECH CO LTD
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