JPH02135323A - Optical ring resonator - Google Patents
Optical ring resonatorInfo
- Publication number
- JPH02135323A JPH02135323A JP63287833A JP28783388A JPH02135323A JP H02135323 A JPH02135323 A JP H02135323A JP 63287833 A JP63287833 A JP 63287833A JP 28783388 A JP28783388 A JP 28783388A JP H02135323 A JPH02135323 A JP H02135323A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- ring resonator
- optical ring
- signal light
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 46
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 abstract description 12
- 239000004065 semiconductor Substances 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000002513 implantation Methods 0.000 abstract 1
- 230000000750 progressive effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Integrated Circuits (AREA)
- Lasers (AREA)
- Semiconductor Lasers (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、光りング共振器の構成に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to the configuration of a light ring resonator.
光リング共振器は、光７フイパセンサ技術に不可欠な光
部品であり、第３図に示すように通常、光導波路５１と
光合分波器５２とで構成される。光リング共振器の性能
は、通常フィネスと呼ばれる量で評価される。The optical ring resonator is an essential optical component for optical 7-fiber sensor technology, and is usually composed of an optical waveguide 51 and an optical multiplexer/demultiplexer 52, as shown in FIG. The performance of an optical ring resonator is usually evaluated by a quantity called finesse.
そして、光リング共振器中の損失を低減することにより
、高いフィネスを実現することができる。このため、従
来は光合分波器を低損失なものとする製造技術が高フィ
ネス化の鍵を握っていた。By reducing the loss in the optical ring resonator, high finesse can be achieved. For this reason, manufacturing technology that makes optical multiplexers and demultiplexers low in loss has traditionally held the key to achieving high finesse.
現在までに得られている、フィネスの最高値は、約５０
０程度であり、この時の光合分波器カップラの損失は０
．５％である （文献［Ｍ。The highest finesse value achieved to date is approximately 50.
The loss of the optical multiplexer/demultiplexer coupler at this time is approximately 0.
．． 5% (Reference [M.
ＨｏＹｕ ｅｔ ａｌ、ｖ Ｐｒｏｃ、 Ｓｏｃ、Ｐｈ
ｏｔｏ−Ｏｐｔ。HoYu et al, v Proc, Soc, Ph
oto-Opt.
Ｉｎｓｔｒｕｍ、 Ｅｎｇ、＊ ４７８ｔ ｐ
１０４ （１９８４）参照」）。Instrum, Eng, *478t p
104 (1984)”).
上述したように、光リング共振器の高フィネス化を実現
する手法として、その共振器中の損失を低減することが
従来上り行なわれてさた。As described above, as a method for realizing high finesse of an optical ring resonator, reducing the loss in the resonator has been conventionally carried out.
しかしながら、このような手法にはおのずと限界があり
、光リング共振器の極限性能を追及する上では、必ずし
も有望な方法とは言いがたい
本発明は、このような従来の問題、αに鑑み、従来とは
異なる方法で、従来以上に高フィネスを得ることの可能
な光フアイバリング共振器を実現することを目的として
いる。However, such a method naturally has its limitations, and cannot necessarily be said to be a promising method in pursuing the ultimate performance of an optical ring resonator.In view of such conventional problems and α, the present invention The objective is to realize an optical fiber ring resonator that can obtain higher finesse than conventional methods using a method different from conventional methods.
本発明によれば、上述の目的は、前記特許請求の範囲に
記載した手段により達成される。According to the invention, the above-mentioned object is achieved by the means specified in the claims.
すなわち、本発明は光導波路およびその両端を結合する
ための光合分波器で構成された光リング共振器において
、光リング共振器内の光導波路部分に光増幅手段を具備
せしめた光リング共振器である。That is, the present invention provides an optical ring resonator configured with an optical waveguide and an optical multiplexer/demultiplexer for coupling both ends of the optical ring resonator, in which an optical amplification means is provided in the optical waveguide portion within the optical ring resonator. It is.
本発明においでは、光リング共振器内の光導波路に光増
幅機能を持たせているので、光りフグ共振器中の損失を
限りなく減少させることが可能である。In the present invention, since the optical waveguide in the optical ring resonator has an optical amplification function, it is possible to reduce the loss in the optical puffer resonator to an infinite extent.
従って、本発明を用いれば、原理的には無限大に近いフ
ィネスを実現することができる。Therefore, by using the present invention, it is possible to achieve finesse that is close to infinity in principle.
第１図は、本発明の一実施例を示す図であって、１は中
心波長１５００ｎｍの信号光源、２は光フアイバカップ
ラ、３は光７フイパ、４は発振波長１５００ 旧ｎの７
７プリベロ一型半導体レーザの両端面にＡＲコートを施
した進行波型半導体レーザアンプを表わしている。FIG. 1 is a diagram showing an embodiment of the present invention, in which 1 is a signal light source with a center wavelength of 1500 nm, 2 is an optical fiber coupler, 3 is an optical 7-fiber, and 4 is an oscillation wavelength of 1500 nm.
This figure represents a traveling wave type semiconductor laser amplifier in which an AR coating is applied to both end faces of a 7 Prevero type semiconductor laser.
信号光源１から出た光は、光フアイバカップラ２を通し
て、光リング共振器内に導かれる。Light emitted from a signal light source 1 is guided into an optical ring resonator through an optical fiber coupler 2.
信号光は、光リング共振器内に設けられた進行波型半導
体レーザアンプ４で増幅される。増幅の度合を半導体レ
ーザアンプ４への注入電源を変化させることにより制御
し、光リング共振器内で信号光が受ける損失を限りなく
減少させることができ、高フィネス化が達成される。The signal light is amplified by a traveling wave semiconductor laser amplifier 4 provided within the optical ring resonator. By controlling the degree of amplification by changing the power injected into the semiconductor laser amplifier 4, the loss that the signal light undergoes within the optical ring resonator can be infinitely reduced, and high finesse can be achieved.
なお、本実施例においては、中心波長１５００ｎＩ１１
の信号光源を用いる場合について述べているが、本発明
における信号光源の波長は、これに限るものではなく、
例えば、 中心波長８００ｎｍあるいは１３００ｎｍ等
の他の中心波長を有する信号光源を用いる場合において
も適用できるものである。In addition, in this example, the center wavelength is 1500nI11
Although the case where a signal light source is used is described, the wavelength of the signal light source in the present invention is not limited to this.
For example, the present invention can be applied even when a signal light source having a center wavelength other than 800 nm or 1300 nm is used.
第２図は、本発明の他の実施例を示す図であって、５は
波長１５３０ｎ［６の信号光源、６７は５３０ ８０
７ １４８０ｎｍのいずれかの波長をもつボンピング
光源（ただし、ボンピング光源６とボンピング光源７は
同−波長）８．９は波長多重合分波器、１０は信号光と
ポンピング光に対して波長選択性を有する光フアイバカ
ップラ、１１はＥｒをドープした光ファイバを表わして
いる。FIG. 2 is a diagram showing another embodiment of the present invention, in which 5 is a signal light source with a wavelength of 1530n [6], 67 is a signal light source with a wavelength of 1530n, and 67 is a signal light source with a wavelength of 1530n.
7 Bumping light source with any wavelength of 1480 nm (However, the pumping light source 6 and pumping light source 7 have the same wavelength) 8.9 is a wavelength multiplexing/demultiplexer, 10 is wavelength selective for signal light and pumping light 11 represents an optical fiber doped with Er.
ボンピング光源６．７を出た光は、波長多重合分波器で
信号光源５から出た光と合波され、光フアイバカップラ
１０と、Ｅｒ ドープ光ファイバ１１とでＭＩｔ成され
た、光リング共振器内に導かれる。信号光はＥｒ ドー
プ光フアイバ１１中でポンピング光により増幅されなが
らリング共振器を多重回伝搬する。The light emitted from the bombing light source 6.7 is multiplexed with the light emitted from the signal light source 5 by a wavelength multiplexing/demultiplexer, and an optical ring formed by an optical fiber coupler 10 and an Er doped optical fiber 11 is formed. guided into the resonator. The signal light propagates through the ring resonator multiple times while being amplified by the pumping light in the Er-doped optical fiber 11.
一力、ポンピング光は、リング共振器を１回伝搬した後
、光ファイバカップラを通してリング共振器外に導かれ
る。このため、光リング共振器内で信号光が受ける損失
を、ポンピング光により制御し、それを限りなく減少さ
せることができるので、高フィネス化が達成される。After the pumping light propagates through the ring resonator once, it is guided out of the ring resonator through an optical fiber coupler. Therefore, the loss that the signal light undergoes within the optical ring resonator can be controlled by the pumping light and can be reduced to an infinite extent, so that high finesse can be achieved.
なお、上記説明においては、１１をＥｒ ドープ光ファ
イバとしているが、これはエルビツム（Ｅｒ）に限るも
のではなく、他の元素をドープした光ファイバ（例えば
イツトリウム （Ｙ）ドープ光ファイバ等）によっても
実現し得るものである。In the above description, 11 is an Er-doped optical fiber, but this is not limited to erbitum (Er), and optical fibers doped with other elements (for example, yttrium (Y)-doped optical fibers) may also be used. This is something that can be achieved.
また、信号光源およびボンピング光源の波長についても
、前者の実施例の場合と同様、他の値を採り得るもので
ある。Further, the wavelengths of the signal light source and the bombing light source can also take other values, as in the former embodiment.
以上説明したように、本発明によれば、光りング共振器
中の損失を限りなく、減少させることが可能であるから
、容易に光リング共振器の高フィネス化を実現し得る利
点がある。As explained above, according to the present invention, it is possible to limitlessly reduce the loss in the optical ring resonator, so there is an advantage that the optical ring resonator can be easily made to have high finesse.
【図面の簡単な説明】
第１図は本発明の一実施例を示す図、第２図は本発明の
他の実施例を示す図、第３図は従来の光リング共振器の
構成を示す図である。[Brief Description of the Drawings] Fig. 1 shows one embodiment of the present invention, Fig. 2 shows another embodiment of the invention, and Fig. 3 shows the configuration of a conventional optical ring resonator. It is a diagram.
Claims (1)
構成された光リング共振器において、光リング共振器内
の光導波路部分に光増幅手段を具備せしめたことを特徴
とする光リング共振器。An optical ring resonator comprising an optical waveguide and an optical multiplexer/demultiplexer for coupling both ends of the optical ring resonator, characterized in that an optical waveguide portion within the optical ring resonator is provided with an optical amplification means. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287833A JPH02135323A (en) | 1988-11-16 | 1988-11-16 | Optical ring resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287833A JPH02135323A (en) | 1988-11-16 | 1988-11-16 | Optical ring resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02135323A true JPH02135323A (en) | 1990-05-24 |
Family
ID=17722354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63287833A Pending JPH02135323A (en) | 1988-11-16 | 1988-11-16 | Optical ring resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02135323A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484129A (en) * | 1990-07-27 | 1992-03-17 | Nec Corp | Semiconductor wavelength filter |
| JPH04332829A (en) * | 1991-05-09 | 1992-11-19 | Nippon Telegr & Teleph Corp <Ntt> | Optical spectrum analyzer |
| JPH1194859A (en) * | 1997-09-18 | 1999-04-09 | Toshihiko Kataoka | Scanning near-field optical microscope utilizing optical resonator |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115277A (en) * | 1983-09-30 | 1985-06-21 | ザ・ボ−ド・オブ・トラステイ−ズ・オブ・ザ・レランド・スタンフオ−ド・ジユニア・ユニバ−シテイ | Fiber optical amplifier |
| JPS60157279A (en) * | 1983-11-25 | 1985-08-17 | ザ・ボード・オブ・トラステイーズ・オブ・ザ・レランド・スタンフオード・ジュニア・ユニバーシテイ | Filber optical amplifier system and method of amplifying photosignal |
| JPS6146084A (en) * | 1984-08-10 | 1986-03-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical amplifier |
| JPS62500339A (en) * | 1984-10-01 | 1987-02-05 | ポラロイド コ−ポレ−シヨン | Optical waveguide device and laser using it |
| JPS62100706A (en) * | 1985-10-28 | 1987-05-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical ring filter |
| JPS62143488A (en) * | 1985-11-27 | 1987-06-26 | ポラロイド コ−ポレ−シヨン | Light signal amplifier |
| JPS6334990A (en) * | 1986-07-30 | 1988-02-15 | Hitachi Ltd | Light pulse generator |
| JPS6364006A (en) * | 1986-09-05 | 1988-03-22 | Nippon Telegr & Teleph Corp <Ntt> | Integrated optical filter |
| JPS63177626A (en) * | 1987-01-19 | 1988-07-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical timing extracting circuit |
-
1988
- 1988-11-16 JP JP63287833A patent/JPH02135323A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115277A (en) * | 1983-09-30 | 1985-06-21 | ザ・ボ−ド・オブ・トラステイ−ズ・オブ・ザ・レランド・スタンフオ−ド・ジユニア・ユニバ−シテイ | Fiber optical amplifier |
| JPS60157279A (en) * | 1983-11-25 | 1985-08-17 | ザ・ボード・オブ・トラステイーズ・オブ・ザ・レランド・スタンフオード・ジュニア・ユニバーシテイ | Filber optical amplifier system and method of amplifying photosignal |
| JPS6146084A (en) * | 1984-08-10 | 1986-03-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical amplifier |
| JPS62500339A (en) * | 1984-10-01 | 1987-02-05 | ポラロイド コ−ポレ−シヨン | Optical waveguide device and laser using it |
| JPS62100706A (en) * | 1985-10-28 | 1987-05-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical ring filter |
| JPS62143488A (en) * | 1985-11-27 | 1987-06-26 | ポラロイド コ−ポレ−シヨン | Light signal amplifier |
| JPS6334990A (en) * | 1986-07-30 | 1988-02-15 | Hitachi Ltd | Light pulse generator |
| JPS6364006A (en) * | 1986-09-05 | 1988-03-22 | Nippon Telegr & Teleph Corp <Ntt> | Integrated optical filter |
| JPS63177626A (en) * | 1987-01-19 | 1988-07-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical timing extracting circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484129A (en) * | 1990-07-27 | 1992-03-17 | Nec Corp | Semiconductor wavelength filter |
| JPH04332829A (en) * | 1991-05-09 | 1992-11-19 | Nippon Telegr & Teleph Corp <Ntt> | Optical spectrum analyzer |
| JPH1194859A (en) * | 1997-09-18 | 1999-04-09 | Toshihiko Kataoka | Scanning near-field optical microscope utilizing optical resonator |
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