A high-speed communication method and system based on hollow-core anti-resonant optical fiber

Abstract

The present invention provides a high-speed communication method and system based on hollow-core anti-resonant optical fiber, which relates to the field of optical fiber communication technology. The high-speed communication method includes: building a hollow-core anti-resonant optical fiber based on an optical fiber casing, a first cladding capillary, and a second cladding capillary, and building an optical fiber channel based on the hollow-core anti-resonant optical fiber; amplifying and filtering the data instruction to be sent based on an electrical transmitter, converting the data instruction to be sent into an optical signal based on an optical transmitter and coupling it into an optical fiber channel, and transmitting the optical signal based on the optical fiber channel; receiving the optical signal transmitted from the optical fiber channel based on a photoelectric detector and converting it into an electrical signal, amplifying, filtering, and demodulating the electrical signal to obtain the data instruction. By constructing a hollow-core anti-resonant optical fiber as an optical fiber channel, the present invention can reduce the communication delay and its limiting loss, and significantly improve the speed of signal transmission.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber communication technology, and in particular to a high-speed communication method and system based on hollow-core anti-resonant optical fiber. Background Art

[0002] In recent years, with the rapid development of optical fiber communication technology, hollow core antiresonant fiber, as a new type of optical fiber structure, has attracted extensive attention from academia and industry due to its unique light-guiding mechanism and potential application value. The research on hollow core antiresonant fiber originated in 2002, when Benabid of the University of Bath in the UK first proposed antiresonant fiber with Kagome cladding structure. The cladding of this optical fiber is composed of periodically arranged air holes, which can achieve ultra-low loss and low nonlinear optical transmission in principle. In addition, it can also provide higher propagation speed and laser damage threshold.

[0003] However, the existing hollow-core anti-resonance fiber cladding structure is mostly a single-loop nodeless structure, that is, it consists of a circle of thin-walled capillaries without contact. Although this structure is simple, there are some problems in practical applications. For example, compared with traditional photonic crystal bandgap fibers, although hollow-core anti-resonance fibers have the advantage of wider transmission bandwidth, their limiting loss is relatively high, which to a certain extent limits the application of hollow-core anti-resonance fibers in the field of communications. Therefore, it is necessary to develop a technical solution to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed communication method and system based on hollow-core anti-resonant optical fiber, which improves the problems of poor signal transmission speed and high optical fiber limiting loss.

[0005] The present invention provides a high-speed communication method based on hollow-core anti-resonant optical fiber, which adopts the following technical solution:

[0006] A hollow-core anti-resonant optical fiber is constructed based on an optical fiber sleeve, a first cladding capillary tube, and a second cladding capillary tube, and an optical fiber channel is constructed based on the hollow-core anti-resonant optical fiber;

[0007] Amplifying and filtering the data instructions to be sent based on the electrical transmitter, converting the data instructions to be sent into optical signals based on the optical transmitter and coupling the optical signals into the optical fiber channel, and transmitting the optical signals based on the optical fiber channel;

[0008] The optical signal transmitted from the optical fiber channel is received by a photoelectric detector and converted into an electrical signal, and the electrical signal is amplified, filtered, and demodulated to obtain data instructions.

[0009] Optionally, the process of building a hollow-core antiresonant optical fiber based on the optical fiber sleeve, the first cladding capillary tube, and the second cladding capillary tube includes:

[0010] The optical fiber sleeve is composed of a double layer of silica, wherein the optical fiber sleeve contains a first cladding capillary and a second cladding capillary, and the boundary of the first cladding capillary forms a fiber core; the first cladding capillary contains a double-layer structure, including a first anti-resonance layer and a second anti-resonance layer, and is tangent to the optical fiber sleeve; the second cladding capillary is tangent to both the optical fiber sleeve and the first cladding capillary.

[0011] Optionally, the number of the first cladding capillaries is 8, the diameter ranges from 15 to 25 microns, and the wall thickness is 0.1 to 1 micron.

[0012] Optionally, the refractive index of the first anti-resonance layer is higher than that of the second anti-resonance layer, and the refractive index of the first anti-resonance layer is in the range of 1.40-1.45, and the refractive index of the second anti-resonance layer is in the range of 1.30-1.40.

[0013] Optionally, the diameter of the second cladding capillary is in the range of 7-13 microns, and the structure of the second cladding capillary is the same as that of the first cladding capillary.

[0014] Optionally, the diameter of the fiber core is in the range of 30-50 microns, and the fiber core contains one or more gases, or is a vacuum.

[0015] Optionally, the process of converting the data instructions to be sent into an optical signal based on an optical transmitter and coupling it to an optical fiber channel includes: coupling a laser diode LD with the optical fiber channel, and converting the data instructions to be sent into an optical signal of a specific wavelength by changing the output power of the laser diode LD, and inputting the optical signal of the specific wavelength into the optical fiber channel, and the specific wavelength needs to satisfy the anti-resonance effect of the hollow-core anti-resonant optical fiber.

[0016] Optionally, in the process of transmitting the optical signal based on the optical fiber channel, the process includes: after the optical signal of the specific wavelength enters the optical fiber, the light wave that meets the resonance condition will be reflected in the first cladding capillary, the second cladding capillary, and the fiber core to form a stable transmission path.

[0017] Optionally, the process of receiving an optical signal transmitted from an optical fiber channel by a photodetector and converting the optical signal into an electrical signal includes:

[0018] The optical fiber channel is connected to the photodetector based on the optical fiber connector, the optical signal in the optical fiber channel is coupled to the photosensitive element of the photodetector based on the lens and the optical fiber collimator, and the photosensitive element receives the optical signal and converts it into an electrical signal.

[0019] In a second aspect of the present invention, a high-speed communication system based on hollow-core anti-resonant optical fiber is provided, comprising a signal sending module, a signal transmission module, and a signal receiving module, wherein:

[0020] Signal transmission module: configured to amplify and filter the data instructions to be transmitted based on the electrical transmitter, and convert the data instructions to be transmitted into optical signals based on the optical transmitter and couple them into the optical fiber channel;

[0021] Signal transmission module: configured to build a hollow-core anti-resonant optical fiber based on the optical fiber sleeve, the first cladding capillary, and the second cladding capillary, build an optical fiber channel based on the hollow-core anti-resonant optical fiber, and transmit the optical signal based on the optical fiber channel;

[0022] Signal receiving module: configured to receive the optical signal transmitted from the optical fiber channel based on the photoelectric detector and convert it into an electrical signal, and amplify, filter and demodulate the electrical signal to obtain data instructions.

[0023] The invention proposes a high-speed communication method and system based on hollow-core anti-resonant optical fiber, which has the following beneficial effects:

[0024] 1. The present invention can reduce the communication delay and significantly improve the speed of signal transmission by constructing a hollow-core anti-resonant optical fiber as an optical fiber channel;

[0025] 2. The number of capillaries in the first cladding of the hollow-core antiresonant optical fiber provided by the present invention is 8, which has higher structural stability and can adapt to more extreme use environments;

[0026] 3. The second cladding capillary of the hollow-core antiresonant optical fiber provided by the present invention fills the gap of the first cladding capillary to form a cladding design with a stepped refractive index, thereby reducing the optical fiber limitation loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flow chart of a high-speed communication method based on hollow-core anti-resonant optical fiber provided by the present invention;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of the hollow-core anti-resonant optical fiber provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0030] The embodiment of the present invention provides a high-speed communication method based on hollow core anti-resonant optical fiber, see Figure 1 ,include:

[0031] S1. Building a hollow-core anti-resonant optical fiber based on an optical fiber sleeve, a first cladding capillary tube, and a second cladding capillary tube, and building an optical fiber channel based on the hollow-core anti-resonant optical fiber;

[0032] S2, amplifying and filtering the data instruction to be sent based on the electrical transmitter, converting the data instruction to be sent into an optical signal based on the optical transmitter and coupling it into the optical fiber channel, and transmitting the optical signal based on the optical fiber channel;

[0033] S3. Receive the optical signal transmitted from the optical fiber channel based on the photoelectric detector and convert it into an electrical signal, amplify, filter and demodulate the electrical signal to obtain data instructions.

[0034] In some embodiments, during the execution of step S1, see Figure 2 ,include:

[0035] The optical fiber sleeve 1 is composed of a double layer of silica, and contains a first cladding capillary 3 and a second cladding capillary 6, and the boundary of the first cladding capillary 3 forms a core 2; the first cladding capillary 3 contains a double-layer structure, including a first anti-resonance layer 4 and a second anti-resonance layer 5, and is tangent to the optical fiber sleeve 1; the second cladding capillary 6 is tangent to both the optical fiber sleeve 1 and the first cladding capillary 3.

[0036] Furthermore, the number of the first cladding capillaries 3 is 8, the diameter ranges from 15 to 25 microns, and the wall thickness is 0.1 to 1 micron.

[0037] In fact, when the number of the first cladding capillaries 3 is 8, more uniform support and constraint will be provided, which will help the optical fiber to maintain the stability of its geometric shape and optical performance in practical applications to cope with more extreme usage environments.

[0038] Furthermore, the refractive index of the first antiresonance layer 4 is higher than that of the second antiresonance layer 5 , and the refractive index of the first antiresonance layer 4 is in the range of 1.40-1.45, and the refractive index of the second antiresonance layer 5 is in the range of 1.30-1.40.

[0039] Furthermore, the diameter of the second cladding capillary 6 ranges from 7 to 13 microns, and the structure of the second cladding capillary 6 is the same as that of the first cladding capillary.

[0040] In fact, after adding the second cladding capillary 6, the structural stability of the hollow-core antiresonant optical fiber is further enhanced, and the confinement loss of the optical fiber is reduced.

[0041] Furthermore, the diameter of the fiber core 2 is in the range of 30-50 microns, and the fiber core 2 contains one or more gases, or is in a vacuum.

[0042] In some embodiments, the process of executing step S2 includes:

[0043] Based on the amplification and filtering of the data instructions to be sent by the electrical transmitter, the laser diode LD is coupled to the optical fiber channel, and the data instructions to be sent are converted into optical signals of specific wavelengths by changing the output power of the laser diode LD. The optical signals of the specific wavelengths are input into the optical fiber channel. The specific wavelengths need to satisfy the anti-resonance effect of the hollow-core anti-resonant optical fiber.

[0044] Furthermore, after the optical signal of the specific wavelength enters the optical fiber, the light wave that meets the resonance condition will be reflected in the first cladding capillary, the second cladding capillary, and the core, forming a stable transmission path.

[0045] In some embodiments, the process of executing step S3 includes:

[0046] The optical fiber channel is connected to the photodetector based on the optical fiber connector, and the optical signal in the optical fiber channel is coupled to the photosensitive element of the photodetector based on the lens and the optical fiber collimator. The photosensitive element receives the optical signal and converts it into an electrical signal, which is amplified, filtered, and demodulated to obtain data instructions.

[0047] The embodiment of the present invention provides a high-speed communication system based on hollow-core anti-resonant optical fiber, including a signal sending module, a signal transmission module, and a signal receiving module, wherein:

[0048] Signal transmission module: configured to amplify and filter the data instructions to be transmitted based on the electrical transmitter, and convert the data instructions to be transmitted into optical signals based on the optical transmitter and couple them into the optical fiber channel;

[0049] Signal transmission module: configured to build a hollow-core anti-resonant optical fiber based on the optical fiber sleeve, the first cladding capillary, and the second cladding capillary, build an optical fiber channel based on the hollow-core anti-resonant optical fiber, and transmit the optical signal based on the optical fiber channel;

[0050] Signal receiving module: configured to receive the optical signal transmitted from the optical fiber channel based on the photoelectric detector and convert it into an electrical signal, and amplify, filter and demodulate the electrical signal to obtain data instructions.

[0051] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A high-speed communication method based on hollow-core anti-resonant optical fiber, characterized in that: The high-speed communication method comprises: A hollow-core anti-resonant optical fiber is constructed based on an optical fiber sleeve, a first cladding capillary tube, and a second cladding capillary tube, and an optical fiber channel is constructed based on the hollow-core anti-resonant optical fiber; Amplifying and filtering the data instructions to be sent based on the electrical transmitter, converting the data instructions to be sent into optical signals based on the optical transmitter and coupling the optical signals into the optical fiber channel, and transmitting the optical signals based on the optical fiber channel; The optical signal transmitted from the optical fiber channel is received by a photoelectric detector and converted into an electrical signal, and the electrical signal is amplified, filtered, and demodulated to obtain data instructions.

2. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 1, characterized in that: The process of building a hollow-core antiresonant optical fiber based on an optical fiber sleeve, a first cladding capillary, and a second cladding capillary includes: An optical fiber sleeve is composed of a double layer of silica, wherein the optical fiber sleeve contains a first cladding capillary and a second cladding capillary, and the boundary of the first cladding capillary forms a fiber core; The first cladding capillary contains a double-layer structure, including a first anti-resonance layer and a second anti-resonance layer, and is tangent to the optical fiber sleeve; The second cladding capillary is tangent to both the optical fiber sleeve and the first cladding capillary.

3. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 2, characterized in that: The number of the first cladding capillaries is 8, the diameter ranges from 15 to 25 microns, and the wall thickness is 0.1 to 1 micron.

4. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 2, characterized in that: The refractive index of the first anti-resonance layer is higher than that of the second anti-resonance layer, and the refractive index of the first anti-resonance layer is in the range of 1.40-1.45, and the refractive index of the second anti-resonance layer is in the range of 1.30-1.

40.

5. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 2, characterized in that: The diameter of the second cladding capillary is in the range of 7-13 microns, and the structure of the second cladding capillary is the same as that of the first cladding capillary.

6. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 2, characterized in that: The diameter of the fiber core is in the range of 30-50 microns, and the fiber core contains one or more gases, or is a vacuum.

7. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 1, characterized in that: The process of converting the data instructions to be sent into optical signals based on the optical transmitter and coupling them into the optical fiber channel includes: The laser diode LD is coupled to the optical fiber channel, and by changing the output power of the laser diode LD, the data instructions to be sent are converted into optical signals of a specific wavelength, and the optical signals of the specific wavelength are input into the optical fiber channel. The specific wavelength needs to satisfy the anti-resonance effect of the hollow-core anti-resonance optical fiber.

8. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 7, characterized in that: The process of transmitting the optical signal based on the optical fiber channel includes: After the optical signal of the specific wavelength enters the optical fiber, the light wave that meets the resonance condition will be reflected in the first cladding capillary, the second cladding capillary, and the core, forming a stable transmission path.

9. A high-speed communication method based on hollow-core anti-resonant optical fiber according to claim 1, characterized in that: The process of receiving the optical signal transmitted from the optical fiber channel based on the photodetector and converting it into an electrical signal includes: The optical fiber channel is connected to the photodetector based on the optical fiber connector, the optical signal in the optical fiber channel is coupled to the photosensitive element of the photodetector based on the lens and the optical fiber collimator, and the photosensitive element receives the optical signal and converts it into an electrical signal.

10. A high-speed communication system based on hollow-core anti-resonant optical fiber, characterized in that: It includes a signal sending module, a signal transmission module, and a signal receiving module, wherein: Signal transmission module: configured to amplify and filter the data instructions to be transmitted based on the electrical transmitter, and convert the data instructions to be transmitted into optical signals based on the optical transmitter and couple them into the optical fiber channel; Signal transmission module: configured to build a hollow-core anti-resonant optical fiber based on the optical fiber sleeve, the first cladding capillary, and the second cladding capillary, build an optical fiber channel based on the hollow-core anti-resonant optical fiber, and transmit the optical signal based on the optical fiber channel; Signal receiving module: configured to receive the optical signal transmitted from the optical fiber channel based on the photoelectric detector and convert it into an electrical signal, and amplify, filter and demodulate the electrical signal to obtain data instructions.

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