CN103378540A - Spectrum widening structure - Google Patents
Spectrum widening structure Download PDFInfo
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- CN103378540A CN103378540A CN2012101273558A CN201210127355A CN103378540A CN 103378540 A CN103378540 A CN 103378540A CN 2012101273558 A CN2012101273558 A CN 2012101273558A CN 201210127355 A CN201210127355 A CN 201210127355A CN 103378540 A CN103378540 A CN 103378540A
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- division multiplexer
- wavelength division
- spectrum
- wave division
- coupler
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Abstract
The invention discloses a spectrum widening structure which comprises an optical splitter, a first wavelength division multiplexer, a ytterbium-doped optical fiber, an isolator and a coupler, wherein the optical splitter, the first wavelength division multiplexer, the ytterbium-doped optical fiber, the isolator and the coupler are connected sequentially, the first wavelength division multiplexer is further connected with a pump, a second wavelength division multiplexer is connected between the first wavelength division multiplexer and the pump, and the second wavelength division multiplexer is further connected with the coupler. According to the spectrum widening structure, the second wavelength division multiplexer is arranged at the end where the pump is located, a part of unused pump light and reverse ASE are leaked out through the second wavelength division multiplexer, and therefore the pump is protected. According to the spectrum widening structure, the part of the reverse ASE is used fully, the part of the leaked reverse ASE is overlaid on an original spectrum through the optical splitter with an appropriate splitting ratio, the overlaid spectrum is even, and therefore the width of the spectrum is widened.
Description
Technical field
The present invention relates to field fiber, relate in particular to wideband light source.
Background technology
The ASE light source refers to a kind of wideband light source that the amplified spontaneous emission principle based on Active Optical Fiber is made into.At present, the ASE light source that is made into for Yb dosed optical fiber, no matter be as shown in Figure 1 fiber turns+monopolar configuration, or two-stage structure, its spectrum all from 1020nm, does not have light in this wave-length coverage of 1000-1020nm.In the practice process, fiber turns+monopolar configuration has better flatness, lower cost, thus have widely market, therefore really need existing ASE light source is further improved and make it cover 1000-1020nm.
Summary of the invention
The objective of the invention is to be directed to the problem that prior art exists, a kind of ASE light source of broadening is provided, thereby has solved the problem that existing ASE light source is difficult to cover 1000-1020nm.
The invention discloses a kind of stretched-out spectrum structure, comprise an optical splitter that connects successively, one first wave division multiplexer, one Yb dosed optical fiber, one isolator and a coupler, described first wave division multiplexer also is connected with a pumping, is connected with a Second Wave division multiplexer between described first wave division multiplexer and the described pumping, and described Second Wave division multiplexer further connects described coupler.
The present invention is by adding a Second Wave division multiplexer at the pumping end; a part of untapped pump light and reverse ASE are leaked out by the Second Wave division multiplexer; thereby protect pumping; and the present invention takes full advantage of this part reverse ASE; by selecting the optical splitter of suitable splitting ratio; this part reverse ASE of leakage is added on original spectrum, and makes the spectrum after the stack smooth, thereby widen the width of spectrum.
Further improvement of the present invention is: be connected with an isolator in the fiber turns of described optical splitter, in order to eliminate the spike that produces owing to self-excitation.
Description of drawings
Fig. 1 is the ASE light supply apparatus of traditional fiber turns+single step arrangement;
Fig. 2 is stretched-out spectrum structural representation of the present invention.
Embodiment
For the benefit of ASE light source of the present invention is done further to understand, describe below in conjunction with drawings and Examples.
With reference to shown in Figure 2, ASE light source of the present invention mainly comprises: an optical splitter 1 that connects successively, one first wave division multiplexer 2, one Yb dosed optical fiber 4, one isolator 5 and a coupler 6, described first wave division multiplexer 2 also is connected with a pumping 7, is connected with a Second Wave division multiplexer 8 between first wave division multiplexer 2 and the pumping 7, and Second Wave division multiplexer 8 further connects described coupler 6.
By add a Second Wave division multiplexer 8 in pumping; a part of untapped pump light and reverse ASE are leaked out by the Second Wave division multiplexer; thereby protect pumping 7; and the present invention takes full advantage of this part reverse ASE; by selecting the optical splitter of suitable splitting ratio, this part reverse ASE of leakage is added on original spectrum, and makes the spectrum after the stack smooth; thereby widen the width of spectrum, make spectrum cover 1000-1020nm.
As preferred embodiments of the present invention, can further in the fiber turns of optical splitter 1, be connected with an isolator 9, in order to eliminate the spike that produces owing to self-excitation.
Claims (2)
1. stretched-out spectrum structure, comprise an optical splitter that connects successively, one first wave division multiplexer, one Yb dosed optical fiber, one isolator and a coupler, described first wave division multiplexer also is connected with a pumping, it is characterized in that: be connected with a Second Wave division multiplexer between described first wave division multiplexer and the described pumping, and described Second Wave division multiplexer further connects described coupler.
2. structure according to claim 1 is characterized in that: be connected with an isolator in the fiber turns of described optical splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101273558A CN103378540A (en) | 2012-04-27 | 2012-04-27 | Spectrum widening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101273558A CN103378540A (en) | 2012-04-27 | 2012-04-27 | Spectrum widening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103378540A true CN103378540A (en) | 2013-10-30 |
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ID=49463289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101273558A Pending CN103378540A (en) | 2012-04-27 | 2012-04-27 | Spectrum widening structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103378540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140764A (en) * | 2015-09-04 | 2015-12-09 | 华南理工大学 | Tunable bandwidth ASE light source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410824A (en) * | 2002-11-05 | 2003-04-16 | 浙江大学 | Long wave band erbium mixed amplifier with low noise, high gain and high plain |
| JP2003224318A (en) * | 2002-01-30 | 2003-08-08 | Ntt Advanced Technology Corp | Wide-band spontaneous emission light source |
| US20050185259A1 (en) * | 2003-12-22 | 2005-08-25 | Sang-Ho Kim | Broadband light source |
| CN202797598U (en) * | 2012-03-23 | 2013-03-13 | 上海科乃特激光科技有限公司 | Broadening ASE spectrum structure |
-
2012
- 2012-04-27 CN CN2012101273558A patent/CN103378540A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003224318A (en) * | 2002-01-30 | 2003-08-08 | Ntt Advanced Technology Corp | Wide-band spontaneous emission light source |
| CN1410824A (en) * | 2002-11-05 | 2003-04-16 | 浙江大学 | Long wave band erbium mixed amplifier with low noise, high gain and high plain |
| US20050185259A1 (en) * | 2003-12-22 | 2005-08-25 | Sang-Ho Kim | Broadband light source |
| CN202797598U (en) * | 2012-03-23 | 2013-03-13 | 上海科乃特激光科技有限公司 | Broadening ASE spectrum structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140764A (en) * | 2015-09-04 | 2015-12-09 | 华南理工大学 | Tunable bandwidth ASE light source |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151104 Address after: 201400, Shanghai, Fengxian District South Village Road, No. 52 Applicant after: Shanghai Connet Fiber Optics Company Limited Address before: No. 951 Shanghai Minhang District city comprehensive business building 200240 Jianchuan Road 1 room 1086 Applicant before: Shanghai Kenaite Laser Technology Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131030 |