CN114784603A - Single-input multi-output optical fiber amplifier - Google Patents
Single-input multi-output optical fiber amplifier Download PDFInfo
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- CN114784603A CN114784603A CN202210394610.9A CN202210394610A CN114784603A CN 114784603 A CN114784603 A CN 114784603A CN 202210394610 A CN202210394610 A CN 202210394610A CN 114784603 A CN114784603 A CN 114784603A
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- optical fiber
- band
- wavelength division
- output
- division multiplexer
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 68
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 6
- -1 rare earth ions Chemical class 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a single-input multi-output optical fiber amplifier which consists of two optical fiber light splitters (1) and (2), a pumping source (3) and M amplification branches, wherein M is a positive integer and is more than or equal to 2. Each amplification branch comprises a band-pass filter, a wavelength division multiplexer and a section of gain optical fiber. Seed light respectively enters the band-pass filters (1-1) and (2-1) through the optical fiber light splitter (1) to reach (N-1). The pump source enters the wavelength division multiplexers (1-2) and (2-2) to (N-2) together with the seed light which passes through the band-pass filters (1-1) and (2-1) to (N-1) through the optical splitter (2). Seed light from the wavelength division multiplexers (1-2) and (2-2) to (N-2) respectively enters the gain fibers (1-3) and (2-3) to (N-3) and then is amplified and output. The invention provides a single-input multi-output optical fiber amplifier by utilizing the prior art conditions, thereby solving the problem that the conventional optical fiber amplifier working in an independent waveband cannot simultaneously amplify a plurality of paths of signals with the same or different wavebands.
Description
Technical Field
The invention discloses a single-input multi-output optical fiber amplifier. Relates to the field of optical fiber amplifiers.
Background
The optical fiber amplifier is an important component in an optical fiber communication system due to the advantages of no need of photoelectric conversion, easy connection with an optical fiber system and the like, and is also the key point of research and application in the optical fiber communication field. The basic structure of a fiber amplifier includes a pump source, a multiplexer for combining pump and signal into a gain fiber, a gain fiber (e.g., erbium-doped fiber) for providing amplification in a desired wavelength band, and other passive devices used in combination.
Optical fiber amplifiers have been widely used in many fields, and have played an important role in other fields such as biomedical fields, in addition to optical relays mainly used in optical fiber communications. Currently, deployment of 5G communication networks and development of artificial intelligence techniques pose significant challenges to the transmission capacity of conventional single mode optical fibers. Multi-band transmission techniques (MBT) that utilize a large spectral bandwidth are considered to be a powerful direction to address capacity shortages. Although the mainstream fiber amplifier still mainly comprises the erbium-doped fiber amplifier which operates in the C-band (1530-1565 nm). However, the second window and the third window which are used for optical fiber communication such as O wave band (1260-, 1360nm) or E wave band (1360-, 1460nm) are also positioned in the low-loss region of the silica-based optical fiber. Therefore, in recent years, the development of new band optical fiber amplifiers other than the C band is becoming a relatively popular direction.
Currently, there have been many practices for fiber amplifiers for different low loss bands, such as bismuth-doped fiber amplifiers operating in the O-band or E-band, and so on. However, one of the important problems existing at present is that the amplifiers of different bands usually work independently of each other, and the conventional optical fiber amplifier usually only transmits one band, and has a single-input single-output structure, so that the bandwidth of the gain is very limited. For example: the gain range of the C-band amplifier is 1530-1565 nm. Furthermore, with the spread of Fiber To The Home (FTTH), the number of transmission nodes of signals is increasing in some specific systems, such as CATV systems. If the conventional single-input single-output amplifier is simply stacked or cascaded, the size is easily increased, which is not favorable for heat dissipation, and further, the power consumption of the amplifier is increased, even the service life is affected. The amplifiers of different wave bands usually need different signals and pumps, and the material cost of the amplifiers is increased to a certain extent. In summary, the conventional fiber amplifier usually works in independent bands, and cannot meet the requirement of amplifying different bands simultaneously, and cannot simultaneously amplify multiple signals of the same or different bands at a time.
Disclosure of Invention
In order to solve the above disadvantages, the present invention provides a single-input multiple-output fiber amplifier using the prior art.
In order to realize the purpose, the invention adopts the following technical scheme:
a single-input multi-output optical fiber amplifier is composed of two optical fiber light splitters (1) and (2), a pumping source (3) and M amplification branches, wherein M is a positive integer and is more than or equal to 2; each amplification branch comprises a band-pass filter, a wavelength division multiplexer and a section of gain optical fiber. Seed light respectively enters the band-pass filter (1-1) and the band-pass filter (2-1) to the band-pass filter (N-1) through the optical fiber beam splitter (1); the pump source enters the wavelength division multiplexer (1-2), the wavelength division multiplexer (2-2) and the wavelength division multiplexer (N-2) through the optical splitter (2) together with seed light which passes through the band-pass filter (1-1), the band-pass filter (2-1) and reaches the band-pass filter (N-1); seed light passing through the wavelength division multiplexer (1-2) enters the gain optical fiber (1-3) and is amplified and output; seed light passing through the wavelength division multiplexer (2-2) enters the gain optical fiber (2-3) and is amplified and output; the seed light passing through the wavelength division multiplexer (N-2) enters the gain optical fiber (N-3) and is amplified and output.
In the above scheme, the splitting ratio of the optical fiber splitter can be adjusted according to needs.
In the scheme, the wavelength of the band-pass filter (N-1) is the same as the gain wavelength of the gain optical fiber (N-3), and N is more than or equal to 1.
In the above scheme, the gain fiber is an active fiber doped with rare earth ions or a bismuth-doped fiber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a main schematic diagram of a single-input dual-output fiber amplifier.
Fig. 2 is a main schematic diagram of a single-input three-output fiber amplifier.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
Referring to fig. 1, the single-input dual-output optical fiber amplifier includes an optical fiber splitter (1), a band-pass filter (1-1), a band-pass filter (2-1), a pump source (3), an optical fiber splitter (2), a wavelength division multiplexer (1-2), a wavelength division multiplexer (2-2), a gain optical fiber (1-3), and a gain optical fiber (2-3) which are sequentially arranged. Seed light is through optical fiber beam splitter (1) gets into band pass filter (1-1) and band pass filter (2-1) respectively, and pump source (3) warp beam splitter (2) together enter into wavelength division multiplexer (1-2) and wavelength division multiplexer (2-2) with the seed light through band pass filter (1-1) and band pass filter (2-1) respectively. The seed light passing through the wavelength division multiplexer (1-2) enters the gain optical fiber (1-3) and then is amplified and output, and the seed light passing through the wavelength division multiplexer (2-2) enters the gain optical fiber (2-3) and then is amplified and output.
A preferred example of this embodiment is: the splitting ratio of the optical fiber splitters (1) and (2) is 50: 50. the wavelengths of the band-pass filter (1-1) and the band-pass filter (2-1) are 1150nm and 1550nm respectively, the wavelength of the pumping source (3) is 980nm, the wavelengths of the wavelength division multiplexer (1-2) and the wavelength division multiplexer (2-2) are 980nm/1150nm and 980nm/1550nm respectively, the gain optical fiber (1-3) is a bismuth-doped optical fiber, and the gain optical fiber (2-3) is an erbium-doped optical fiber.
Example 2
Referring to fig. 2, the single-input three-output optical fiber amplifier comprises an optical fiber splitter (1), a band-pass filter (1-1), a band-pass filter (2-1), a band-pass filter (3-1), a pumping source (3), an optical fiber splitter (2), a wavelength division multiplexer (1-2), a wavelength division multiplexer (2-2), a wavelength division multiplexer (3-2), a gain optical fiber (1-3), a gain optical fiber (2-3) and a gain optical fiber (3-3) which are sequentially arranged. The seed light respectively enters the band-pass filter (1-1), the band-pass filter (2-1) and the band-pass filter (3-1) through the optical fiber splitter (1). The pump source (3) enters the wavelength division multiplexer (1-2), the wavelength division multiplexer (2-2) and the wavelength division multiplexer (3-2) together with seed light passing through the band-pass filter (1-1), the band-pass filter (2-1) and the band-pass filter (3-1) through the optical splitter (2) respectively. Seed light passing through the wavelength division multiplexer (1-2) enters the gain optical fiber (1-3) and is amplified and output; seed light passing through the wavelength division multiplexer (2-2) enters the gain optical fiber (2-3) and is amplified and output; the seed light passing through the wavelength division multiplexer (3-2) enters the gain fiber (3-3) and is amplified and output.
A preferred example of this embodiment is: the wavelengths of the band-pass filter (1-1), the band-pass filter (2-1) and the band-pass filter (3-1) are 1310nm, 1410nm and 1550nm respectively; the wavelength of the pump source (3) is 1240nm, and the wavelengths of the wavelength division multiplexers (1-2), the wavelength division multiplexers (2-2) and the wavelength division multiplexers (3-2) are 1240nm/1310nm, 1240nm/1410nm and 1240nm/1550nm, respectively. The gain optical fibers (1-3), the gain optical fibers (2-3) and the gain optical fibers (3-3) are all bismuth-doped optical fibers.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A single-input multiple-output fiber amplifier, characterized by: the amplifier consists of two optical fiber splitters (1) and (2), a pumping source (3) and M amplification branches, wherein M is a positive integer and is more than or equal to 2, each amplification branch comprises a band-pass filter, a wavelength division multiplexer and a section of gain optical fiber, seed light respectively enters the band-pass filters (1-1) and (2-1) to the band-pass filter (N-1) through the optical fiber splitter (1), the pumping source respectively enters the wavelength division multiplexer (1-2) through the optical fiber splitter (2) and seed light passing through the band-pass filters (1-1) and (2-1) to the band-pass filter (N-1), the wavelength division multiplexer (2-2) to the wavelength division multiplexer (N-2), and the seed light passing through the wavelength division multiplexer (1-2) enters the gain optical fiber (1-3) and then is amplified and output, the seed light passing through the wavelength division multiplexer (2-2) enters the gain optical fiber (2-3) and then is amplified and output, and the seed light passing through the wavelength division multiplexer (N-2) enters the gain optical fiber (N-3) and then is amplified and output.
2. The single-input multiple-output fiber amplifier according to claim 1, wherein: the splitting ratio of the optical fiber splitter can be adjusted according to needs.
3. The single-input multiple-output fiber amplifier according to claim 1, wherein: the wavelength of the band-pass filter (N-1) is the same as the gain wavelength of the gain optical fiber (N-3), and N is more than or equal to 1.
4. The single-input multiple-output fiber amplifier according to claim 1, wherein: the gain optical fiber is an active optical fiber doped with rare earth ions or a bismuth-doped optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394610.9A CN114784603A (en) | 2022-04-13 | 2022-04-13 | Single-input multi-output optical fiber amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394610.9A CN114784603A (en) | 2022-04-13 | 2022-04-13 | Single-input multi-output optical fiber amplifier |
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| CN114784603A true CN114784603A (en) | 2022-07-22 |
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| CN202210394610.9A Pending CN114784603A (en) | 2022-04-13 | 2022-04-13 | Single-input multi-output optical fiber amplifier |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190945A (en) * | 1992-01-10 | 1993-07-30 | Fujitsu Ltd | Optical amplifier |
| US6437906B1 (en) * | 2000-11-22 | 2002-08-20 | Cisco Technology, Inc. | All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk |
| CN101562307A (en) * | 2009-05-26 | 2009-10-21 | 电子科技大学 | 1054nm pumping beam splitting array type ytterbium doped optical fiber amplifier |
| CN109802289A (en) * | 2019-03-11 | 2019-05-24 | 电子科技大学 | Mould erbium-doped fiber amplifier is lacked in a kind of low difference mode gain |
-
2022
- 2022-04-13 CN CN202210394610.9A patent/CN114784603A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190945A (en) * | 1992-01-10 | 1993-07-30 | Fujitsu Ltd | Optical amplifier |
| US6437906B1 (en) * | 2000-11-22 | 2002-08-20 | Cisco Technology, Inc. | All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk |
| CN101562307A (en) * | 2009-05-26 | 2009-10-21 | 电子科技大学 | 1054nm pumping beam splitting array type ytterbium doped optical fiber amplifier |
| CN109802289A (en) * | 2019-03-11 | 2019-05-24 | 电子科技大学 | Mould erbium-doped fiber amplifier is lacked in a kind of low difference mode gain |
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