CN1770573A - Optical fibre Raman amplification SBS comb-shaped light source - Google Patents
Optical fibre Raman amplification SBS comb-shaped light source Download PDFInfo
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- CN1770573A CN1770573A CNA2005100606722A CN200510060672A CN1770573A CN 1770573 A CN1770573 A CN 1770573A CN A2005100606722 A CNA2005100606722 A CN A2005100606722A CN 200510060672 A CN200510060672 A CN 200510060672A CN 1770573 A CN1770573 A CN 1770573A
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Abstract
This invention discloses fiber Brillouin light comb source, which comprises the following parts: semi-conductor laser, first optical isolator, single mode fiber, pump to signal fiber wavelength-division multiplex, pump fiber laser and second isolator, wherein, the semi-conductor output end is connected to input end of first isolator and the output end of first isolator is connected to input end of single mode fiber; the single fiber output end is connected to one end of multiplex; the multiplex other end is divided into twp paths separately connecting pump fiber laser and second isolator. The comb source is of simple structure and high coupling efficiency and uses non-linear stimulated Brillouin scattering effect to generate comb source of 11GHz.
Description
Technical field
The present invention relates to optical fibre Raman amplification SBS comb-shaped light source, belong to the optic communication device field.
Background technology
In light dense wave division multipurpose (DWDM) fiber optic transmission system, need to use comb-type light source, the method that produces comb-type light source is to adopt broadband optical-fiber source and optical fibre Fabry-perot multiple-beam interference filter to realize, broadband optical-fiber source generally adopts the erbium-doped fiber wideband light source, but only is applicable to C-band; The modulation degree of optical fibre Fabry-perot multiple-beam interference filter is lower, and is influenced by ambient temperature big, needs thermostat, the structure more complicated, and volume is big, the cost height.
Summary of the invention
The objective of the invention is in light dense wave division multipurpose (DWDM) fiber optic transmission system, provide a kind of simple in structure, efficient is high, optical fibre Raman amplification SBS comb-shaped light source applied widely.
For achieving the above object, technical solution of the present invention is: utilize the stimulated Brillouin scattering effect of non-linear cascade to realize comb-type light source in fiber Raman amplifier.Comprise semiconductor laser, first optical isolator, monomode fiber, pumping-signal optical fibre wavelength division multiplexer, the pumping optical fiber laser and second optical isolator, the output of semiconductor laser links to each other with the input of first isolator, the output of first isolator links to each other with the input of monomode fiber, the output of monomode fiber links to each other with an end of pumping-signal optical fibre wavelength division multiplexer, the other end of pumping-signal optical fibre wavelength division multiplexer divides two the tunnel, respectively with the pumping optical fiber laser with link to each other with second optical isolator.
Above-mentioned semiconductor laser can be live width less than 100MHz, wavelength is the outer cavity optical fibre laser of the semiconductor of 1300-1700nm.The pumping optical fiber laser can adopt the adjustable power fibre optic Raman laser that is operated in the 1200-1600nm wave band.Monomode fiber can adopt the DCF monomode fiber.
The operation principle of comb-type light source of the present invention is, the laser that semiconductor laser produces is as flashlight, enter monomode fiber through first optical isolator, the pumping optical fiber laser is as pump light, enter monomode fiber through pumping-signal optical fibre wavelength division multiplexer, when the power of incident pumping optical fiber laser surpassed threshold power, flashlight can produce the stimulated Brillouin scattering line in monomode fiber, and its frequency displacement is about 11G Hz.When the pump power of further raising pumping optical fiber laser (improve light and send out amplifier gain), the SBS line that multistage (can reach at most 200 multistage) occurred has produced the more smooth optical fiber comb-type light source of strength ratio and has exported later on through the pumping-signal optical fibre wavelength division multiplexer and second optical isolator successively.
Coupled modes of the present invention are simple, and the coupling efficiency height utilizes stimulated Brillouin scattering (SBS) effect of the non-linear cascade in the optical fiber, and the interval of the comb-type light source frequency displacement that is produced is even, and power is comparatively impartial, and spectral range can reach 19nm.The present invention is applicable to any wave band of 1200-1600nm scope.Can be widely used in light dense wave division multipurpose (DWDM) fiber optic transmission system.
Description of drawings
Fig. 1 is the schematic diagram of optical fibre Raman amplification SBS comb-shaped light source of the present invention;
Fig. 2 is 1520nm incident laser line (BP) and stimulated Brillouin scattering linear light spectrogram;
Fig. 3 is an optical fibre Raman amplification SBS comb-shaped light source spectrogram of the present invention.
Embodiment
With reference to Fig. 1, the optical fibre Raman amplification SBS comb-shaped light source of invention comprises semiconductor laser 21, the first optical isolators 22, monomode fiber 23, pumping-signal optical fibre wavelength division multiplexer 24, pumping optical fiber laser 25 and second optical isolator 26.In the illustrated example, semiconductor laser 21 adopts live width less than 100MHz, and wavelength is the outer cavity optical fibre laser of the semiconductor of 1520nm, and monomode fiber 23 is the DCF monomode fiber of 10km, pumping optical fiber laser 25 adopts the fibre optic Raman laser that is operated in the 1428nm wave band, its adjustable power.The output of semiconductor laser 21 links to each other with the input of first isolator 22, the output of first isolator 22 links to each other with the input of monomode fiber 23, the output of monomode fiber 23 links to each other with an end of pumping-signal optical fibre wavelength division multiplexer 24, the other end of pumping-signal optical fibre wavelength division multiplexer 24 divides two the tunnel, respectively with pumping optical fiber laser 25 with link to each other with second optical isolator 26.Wherein first isolator 22 is used to prevent that the spontaneous emission light that has been exaggerated that optical element reflects from entering the outer cavity optical fibre laser of semiconductor.Second isolator 26 is used to prevent that the spontaneous emission light that has been exaggerated that optical elements such as signal output connector reflect from entering monomode fiber.
The laser that narrow linewidth semiconductor laser produces is as flashlight, enter the DCF monomode fiber of 10km later on through first optical isolator, the pumping optical fiber laser is as pump light, enter the DCF monomode fiber of 10km through pumping-signal optical fibre wavelength division multiplexer, when the power of incident pumping optical fiber laser surpasses threshold power, flashlight can produce the stimulated Brillouin scattering line in monomode fiber, its frequency displacement is about 11G Hz, and its spectrum as shown in Figure 2.When the pump power of further raising pumping optical fiber laser, the SBS line that multistage (can reach at most 200 multistage) occurred, its spectrum as shown in Figure 3, the optical fiber comb-type light source spectral range that produces of the present invention can reach 19nm as seen from the figure, and its frequency displacement at interval evenly, and power is comparatively impartial.
Claims (4)
1. optical fibre Raman amplification SBS comb-shaped light source, it is characterized in that comprising semiconductor laser (21), first optical isolator (22), monomode fiber (23), pumping-signal optical fibre wavelength division multiplexer (24), pumping optical fiber laser (25) and second optical isolator (26), the output of semiconductor laser (21) links to each other with the input of first isolator (22), the output of first isolator (22) links to each other with the input of monomode fiber (23), the output of monomode fiber (23) links to each other with an end of pumping-signal optical fibre wavelength division multiplexer (24), the other end of pumping-signal optical fibre wavelength division multiplexer (24) divides two the tunnel, respectively with pumping optical fiber laser (25) with link to each other with second optical isolator (26).
2. optical fibre Raman amplification SBS comb-shaped light source according to claim 1, it is characterized in that said semiconductor laser (21) be live width less than 100MHz, wavelength is the outer cavity optical fibre laser of the semiconductor of 1300-1700nm.
3. optical fibre Raman amplification SBS comb-shaped light source according to claim 1 is characterized in that pumping optical fiber laser (25) is the adjustable power fibre optic Raman laser that is operated in the 1200-1600nm wave band.
4. optical fibre Raman amplification SBS comb-shaped light source according to claim 1 is characterized in that monomode fiber (23) is the DCF monomode fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100606722A CN1770573A (en) | 2005-09-08 | 2005-09-08 | Optical fibre Raman amplification SBS comb-shaped light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100606722A CN1770573A (en) | 2005-09-08 | 2005-09-08 | Optical fibre Raman amplification SBS comb-shaped light source |
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| CN1770573A true CN1770573A (en) | 2006-05-10 |
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| CNA2005100606722A Pending CN1770573A (en) | 2005-09-08 | 2005-09-08 | Optical fibre Raman amplification SBS comb-shaped light source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949743A (en) * | 2010-08-09 | 2011-01-19 | 宁波诺驰光电科技发展有限公司 | Novel Brillouin time domain analyzer |
| CN102237631A (en) * | 2010-04-22 | 2011-11-09 | 中国科学院西安光学精密机械研究所 | Single-mode pumping beam combiner |
| CN101569066B (en) * | 2007-02-09 | 2013-04-24 | 株式会社藤仓 | Fiber laser |
| CN103441417A (en) * | 2013-09-17 | 2013-12-11 | 电子科技大学 | Novel multi-wavelength Brillouin-Raman fiber laser |
| CN106918972A (en) * | 2017-03-24 | 2017-07-04 | 苏州大学 | Aowc |
| CN107465108A (en) * | 2017-07-27 | 2017-12-12 | 吉林大学 | Optical frequency comb generation device and method based on dual wavelength Brillouin laser annular chamber |
| WO2021238997A1 (en) * | 2020-05-27 | 2021-12-02 | 南京大学 | Method and apparatus for generating optical frequency comb |
-
2005
- 2005-09-08 CN CNA2005100606722A patent/CN1770573A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569066B (en) * | 2007-02-09 | 2013-04-24 | 株式会社藤仓 | Fiber laser |
| CN102237631A (en) * | 2010-04-22 | 2011-11-09 | 中国科学院西安光学精密机械研究所 | Single-mode pumping beam combiner |
| CN101949743A (en) * | 2010-08-09 | 2011-01-19 | 宁波诺驰光电科技发展有限公司 | Novel Brillouin time domain analyzer |
| CN101949743B (en) * | 2010-08-09 | 2012-08-08 | 宁波诺驰光电科技发展有限公司 | Novel Brillouin time domain analyzer |
| CN103441417A (en) * | 2013-09-17 | 2013-12-11 | 电子科技大学 | Novel multi-wavelength Brillouin-Raman fiber laser |
| CN103441417B (en) * | 2013-09-17 | 2015-12-23 | 电子科技大学 | A kind of Novel multi-wavelength Brillouin-Raman fiber laser |
| CN106918972A (en) * | 2017-03-24 | 2017-07-04 | 苏州大学 | Aowc |
| CN107465108A (en) * | 2017-07-27 | 2017-12-12 | 吉林大学 | Optical frequency comb generation device and method based on dual wavelength Brillouin laser annular chamber |
| CN107465108B (en) * | 2017-07-27 | 2020-07-24 | 吉林大学 | Optical frequency comb generation device and method based on dual-wavelength Brillouin laser annular cavity |
| WO2021238997A1 (en) * | 2020-05-27 | 2021-12-02 | 南京大学 | Method and apparatus for generating optical frequency comb |
| GB2602411A (en) * | 2020-05-27 | 2022-06-29 | Univ Nanjing | Method and apparatus for generating optical frequency comb |
| US11822207B2 (en) | 2020-05-27 | 2023-11-21 | Nanjing University | Method and apparatus for generating optical frequency comb |
| GB2602411B (en) * | 2020-05-27 | 2023-12-20 | Univ Nanjing | Method and apparatus for generating optical frequency comb |
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