CN201576884U - Device of obtaining multi-wavelength laser - Google Patents
Device of obtaining multi-wavelength laser Download PDFInfo
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- CN201576884U CN201576884U CN2010200497539U CN201020049753U CN201576884U CN 201576884 U CN201576884 U CN 201576884U CN 2010200497539 U CN2010200497539 U CN 2010200497539U CN 201020049753 U CN201020049753 U CN 201020049753U CN 201576884 U CN201576884 U CN 201576884U
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- wavelength
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- optical coupler
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Abstract
The utility model relates to a device of obtaining multi-wavelength laser. The prior technology has problems of high cost and difficult wavelength interval control. An output port of a wavelength fixed semi-conductor laser and an output port of a wavelength tunable semiconductor laser are respectively connected with another input port optical fiber of a first optical coupler; an output port of the first optical coupler is connected with the input port optical fiber of a second optical coupler; an input port of the second optical coupler is connected with the input port optical fiber of an erbium-doped optical fiber amplifier; an output port of the erbium-doped optical fiber amplifier is connected with one-end optical fiber of a high non-linear optical fiber; another end of the high non-linear optical fiber is connected with another input port optical fiber of the second optical coupler; another output port of the second optical coupler is used as the output port of the multi-wavelength laser. The laser has features of large wavelength range, tunable wavelength interval and narrow single-wavelength laser bandwidth.
Description
Technical field
The utility model belongs to laser technology field, and is particularly a kind of based on strengthening the equipment that four-wave mixing effect obtains multiwavelength laser.
Background technology
At laser technology field, the appearance of fiber laser has promoted the performance of laser greatly.Fiber laser has advantages such as compact conformation, optical fiber compatibility, low threshold value, high efficiency, high light beam quality and laser frequency spectrum controllability are strong.The laser frequency spectrum controllability of fiber laser is mainly reflected in aspects such as wavelength tuning, wavelength switching, multiwavelength laser output, and these characteristics are that the laser of other type is unexistent.Multiwavelength laser has important use to be worth in fields such as optical communication system, sensor-based system, industrial processes, monitorings, become the focus that people pay close attention to day by day.
The research of many acquisition multiwavelength laser has been arranged at present.The most potential in optical communications wavelength is Multiwavelength Erbium-doped Fiber Laser, and the laser of this type faces a difficulty: the Er-doped fiber under the normal temperature has very big uniform gain live width, so has strong gain competition between the multiwavelength laser and cause the power output instability.Although there have been some technology to be used to solve the problem of gain competition between the erbium doped fiber laser different wave length, cost is than higher.On the one hand, in the research approach of the present acquisition multiwavelength laser of reporting, also lack the control technology of wavelength interval in addition.Be in the scheme of realization wavelength interval control in laboratory research stage in only a few, also have wavelength instability, the single laser bandwidth serious problems that influences the multiwavelength laser application such as too big.
Summary of the invention
The utility model has proposed a kind of based on strengthening the equipment that four-wave mixing effect obtains multiwavelength laser at the deficiencies in the prior art.
The technical scheme that the utility model technical solution problem is taked is:
A kind of equipment that obtains multiwavelength laser comprises wavelength fixedly semiconductor laser, semiconductor laser with tunable wavelength, first optical coupler, second optical coupler, erbium-doped fiber amplifier and highly nonlinear optical fiber.The wavelength fixedly output port of semiconductor laser and an input port fiber of first optical coupler is connected; Another input port fiber of the output port of semiconductor laser with tunable wavelength and first optical coupler is connected; The output port of first optical coupler is connected with an input port fiber of second optical coupler; An output port of second optical coupler is connected with the input port fiber of erbium-doped fiber amplifier; The output port of erbium-doped fiber amplifier is connected with an end optical fiber of highly nonlinear optical fiber; The other end of highly nonlinear optical fiber is connected with another input port fiber of second optical coupler; Another output port of second optical coupler is as the output port of multiwavelength laser.
Advantages such as the multiwavelength laser that utilizes the utility model to obtain has that wave-length coverage is big, the wavelength interval is tunable, single wavelength laser narrow bandwidth, power output are stable can be applied to fields such as optical communication system, sensor-based system, industrial processes, monitoring.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the equipment of realization multiwavelength laser comprises wavelength fixedly semiconductor laser 1, semiconductor laser with tunable wavelength 2, first optical coupler 3, second optical coupler 4, erbium-doped fiber amplifier 6 and highly nonlinear optical fiber 5.
The wavelength fixedly output port of semiconductor laser 1 and an input port fiber of first optical coupler 3 is connected; The output port of semiconductor laser with tunable wavelength 2 is connected with another input port fiber of first optical coupler 3; The output port of first optical coupler 3 is connected with an input port fiber of second optical coupler 4; An output port of second optical coupler 4 is connected with the input port fiber of erbium-doped fiber amplifier 6; The output port of erbium-doped fiber amplifier 6 is connected with an end optical fiber of highly nonlinear optical fiber 5; The other end of highly nonlinear optical fiber 5 is connected with another input port fiber of second optical coupler 4; Another output port of second optical coupler 4 is as the output port of multiwavelength laser.
The course of work of this equipment for open wavelength fixedly semiconductor laser 1 and semiconductor laser with tunable wavelength 2, the wavelength of regulating semiconductor laser with tunable wavelength 2 is 1565.8nm, make the wavelength 2 of semiconductor laser with tunable and wavelength fixedly the wavelength interval of semiconductor laser 1 be 0.8nm; Open erbium-doped fiber amplifier 6; Regulate the gain coefficient of erbium-doped fiber amplifier 6, make the multiwavelength laser wavelength number of exporting from another output port of second optical coupler 4 reach maximum, can obtain the wavelength interval is the multiwavelength laser output of 0.8nm; Regulate the wavelength of semiconductor laser with tunable 2 and can realize the tuning of multiwavelength laser wavelength interval.In the present embodiment, the tuning range of multiwavelength laser wavelength interval is 0.2nm to 2nm.
Claims (1)
1. equipment that obtains multiwavelength laser, comprise wavelength fixedly semiconductor laser, semiconductor laser with tunable wavelength, first optical coupler, second optical coupler, erbium-doped fiber amplifier and highly nonlinear optical fiber, it is characterized in that: the wavelength fixedly output port of semiconductor laser and an input port fiber of first optical coupler is connected; Another input port fiber of the output port of semiconductor laser with tunable wavelength and first optical coupler is connected; The output port of first optical coupler is connected with an input port fiber of second optical coupler; An output port of second optical coupler is connected with the input port fiber of erbium-doped fiber amplifier, the output port of erbium-doped fiber amplifier is connected with an end optical fiber of highly nonlinear optical fiber, and the other end of highly nonlinear optical fiber is connected with another input port fiber of second optical coupler; Another output port of second optical coupler is as the output port of multiwavelength laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200497539U CN201576884U (en) | 2010-01-12 | 2010-01-12 | Device of obtaining multi-wavelength laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200497539U CN201576884U (en) | 2010-01-12 | 2010-01-12 | Device of obtaining multi-wavelength laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201576884U true CN201576884U (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200497539U Expired - Fee Related CN201576884U (en) | 2010-01-12 | 2010-01-12 | Device of obtaining multi-wavelength laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201576884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570255A (en) * | 2011-12-30 | 2012-07-11 | 北京交通大学 | Multi-wavelength optical fiber laser |
| CN103718398A (en) * | 2011-08-10 | 2014-04-09 | 富士通株式会社 | External resonator semiconductor laser element and optical element |
-
2010
- 2010-01-12 CN CN2010200497539U patent/CN201576884U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103718398A (en) * | 2011-08-10 | 2014-04-09 | 富士通株式会社 | External resonator semiconductor laser element and optical element |
| CN103718398B (en) * | 2011-08-10 | 2015-11-25 | 富士通株式会社 | External resonant type semiconductor Laser device and optical element |
| CN102570255A (en) * | 2011-12-30 | 2012-07-11 | 北京交通大学 | Multi-wavelength optical fiber laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20120112 |