JPS6329722A - Optical switch - Google Patents
Optical switchInfo
- Publication number
- JPS6329722A JPS6329722A JP17302086A JP17302086A JPS6329722A JP S6329722 A JPS6329722 A JP S6329722A JP 17302086 A JP17302086 A JP 17302086A JP 17302086 A JP17302086 A JP 17302086A JP S6329722 A JPS6329722 A JP S6329722A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- optical fiber
- rod lens
- light
- rays
- 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 22
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims description 20
- 239000000835 fiber Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3548—1xN switch, i.e. one input and a selectable single output of N possible outputs
- G02B6/3552—1x1 switch, e.g. on/off switch
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
- G02B6/353—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being a shutter, baffle, beam dump or opaque element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
- G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は光ファイバを使用し、光の透過と遮断によりス
イッチングを行う光スイッチに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical switch that uses optical fibers and performs switching by transmitting and blocking light.
従来の技術
従来、この種の光スイッチは第４図に示すような構成で
あった。第４図において、１ａ、１ｂは光ファイバ、２
ａ、２ｂはロッドレンズ、３は遮断片、４，５はコイル
バネである。BACKGROUND OF THE INVENTION Conventionally, this type of optical switch has had a configuration as shown in FIG. In FIG. 4, 1a and 1b are optical fibers, 2
A and 2b are rod lenses, 3 is a blocking piece, and 4 and 5 are coil springs.
光フアイバ１乙から出射した光はロッドレンズ２ａで平
行光線６に変換され、遮断片３に設けられた孔を通過し
たのちロッドレンズ２ｂで集光され、光ファイバ１ｂに
入射する。一方、外気温度が上昇すると形状記憶合金で
作られたコイルバネ４が縮むために遮断片３が平行光線
６を遮断し、光ファイバ１ｂへ光が入射しなくなる。The light emitted from the optical fiber 1B is converted into parallel light rays 6 by the rod lens 2a, passes through a hole provided in the blocking piece 3, is condensed by the rod lens 2b, and enters the optical fiber 1b. On the other hand, when the outside temperature rises, the coil spring 4 made of a shape memory alloy contracts, so the blocking piece 3 blocks the parallel light rays 6, and no light enters the optical fiber 1b.
外気温度が下降すると形状記憶合金で作られたコイルバ
ネ４が伸び、コイルバネ６が縮むことにより遮断片３が
もとに戻り、平行光線６が遮断片３の孔を通ることによ
り、再び光ファイバ１ｂに入射するものである。When the outside temperature falls, the coil spring 4 made of a shape memory alloy expands, the coil spring 6 contracts, and the blocking piece 3 returns to its original state.The parallel light beam 6 passes through the hole in the blocking piece 3, and the optical fiber 1b is connected again. is incident on .
発明が解決しようとする問題点 このような従来の構成では、ロッドレンズ２ａ。The problem that the invention aims to solve In such a conventional configuration, the rod lens 2a.
２ｂを２個使用しているために光軸を調整して光学的結
合しなければならないとともに、ロッドレンズ２Δ、２
ｂでコリメントした光を遮断片３で遮断するため、遮断
片３の移動距離を大きくとらなければならないと言う問
題点があった。Since two lenses 2b are used, the optical axis must be adjusted and optically coupled, and the rod lenses 2Δ, 2
In order to block the light collimated in b by the blocking piece 3, there was a problem in that the blocking piece 3 had to move a long distance.
本発明はこのような問題点を解決するもので、部品数を
少なくし、焦点距離だけを調整して光学的に結合し、且
遮断片を少ない移動距離で光を完全に遮断する光スイッ
チを提供するものである。The present invention solves these problems by creating an optical switch that reduces the number of parts, adjusts only the focal length, optically connects, and completely blocks light with a short movement of the blocking piece. This is what we provide.
問題点を解決するための手段
この問題点を解決するために本発明は一つのロッドレン
ズとの両側の焦点に二本の光ファイバを設け、さらに、
遮断片をロッドレンズと光ファイバとの間に挿入するよ
うにしたものである。Means for solving the problem In order to solve this problem, the present invention provides one rod lens and two optical fibers at the focal points on both sides, and further,
A blocking piece is inserted between the rod lens and the optical fiber.
作用
この構成により、焦点距離の調整だけで低損失で光フア
イバ間をロッドレンズを介して光学的に結合できるとと
もに、遮断片を光ファイバとロッドレンズ間に挿入する
ため、遮断片の移動距離を少なくしても光を完全に遮断
することができることとなる。Function: With this configuration, optical fibers can be optically coupled via the rod lens with low loss by simply adjusting the focal length, and since the blocking piece is inserted between the optical fiber and the rod lens, the movement distance of the blocking piece can be reduced. Even if the amount is reduced, the light can be completely blocked.
実施例
第１図は本発明の一実施例による光スイッチの構成図で
あり、第１図において、１１１Ｌ、１１ｂは光ファイバ
、１２＆、１２ｂは精密キャピラリー、１３はロッドレ
ンズ、１４はＶ溝、１５は遮断片、１６は形状記憶合金
できたコイルバネ、１了はコイルバネである。第２図は
本発明の一実施例による光スイッチの機能図であり、１
８．１９は光路である。Embodiment FIG. 1 is a block diagram of an optical switch according to an embodiment of the present invention. In FIG. 1, 111L and 11b are optical fibers, 12&, 12b are precision capillaries, 13 is a rod lens, 14 is a V-groove, 15 is a blocking piece, 16 is a coil spring made of shape memory alloy, and 1 is a coil spring. FIG. 2 is a functional diagram of an optical switch according to an embodiment of the present invention.
8.19 is the optical path.
光ファイバ１１ａ、１１ｂを直径がロッドレンズ１３と
同じ精密スリーブ１２＆、１２ｂに挿入し、これらをＶ
溝１４に乗せることで自動的に光軸を合せられる。よっ
て、ロッドレンズ１３と光ファイバ１１ａ、１１ｂとの
焦点距離を調整するだけで光学的に結合できる。The optical fibers 11a and 11b are inserted into precision sleeves 12&, 12b having the same diameter as the rod lens 13, and these are
By placing it on the groove 14, the optical axis can be automatically aligned. Therefore, the rod lens 13 and the optical fibers 11a, 11b can be optically coupled by simply adjusting their focal lengths.
光ファイバ１１１Ｌから出射した光は光路１８に沿って
進み、ロッドレンズ１３に入射する。ロッドレンズ１３
で光路を変えられた光は光路１９に沿って進み、光ファ
イバに入射する。The light emitted from the optical fiber 111L travels along the optical path 18 and enters the rod lens 13. rod lens 13
The light whose optical path has been changed in step 19 travels along the optical path 19 and enters the optical fiber.
光ファイバ１１＆から出射する光のビーム径Ｒは第３図
に示すように
Ｒ＝（２ＸＬｓｉｎθ）＋２ｒ
（Ｌ：光フフイバ端面からの距離、ｓｉｎθ：光ファイ
バの開口角、ｒは光ファイバの半径）で与えられ、光フ
ァイバの近くでは光ファイバのコア径（２５０λｍ）よ
り少し大きいだけであるが、ロッドレンズの近くでは２
羽近くにもなるため、光ファイバの近くで光を遮断する
ことにより遮断片１５の移動距離は僅かな移動ですむ。The beam diameter R of the light emitted from the optical fiber 11& is as shown in Fig. 3: R = (2XLsinθ) + 2r (L: distance from the end face of the optical fiber, sinθ: aperture angle of the optical fiber, r is the radius of the optical fiber) Near the optical fiber, it is only slightly larger than the core diameter of the optical fiber (250λm), but near the rod lens, it is 2
Since the shielding piece 15 is close to the blade, by blocking the light near the optical fiber, the distance the shielding piece 15 can be moved is only a short distance.
なお、遮断片１５の動作のメカニズムは従来例の場合と
同じで、温度の上昇および下降で形状記憶合金でできた
コイルバネ１６が伸び・縮みすることで遮断片１５が動
く。The mechanism of operation of the blocking piece 15 is the same as in the conventional example, and the blocking piece 15 moves as the coil spring 16 made of a shape memory alloy expands and contracts as the temperature rises and falls.
発明の効果
以上のように本発明によれば、遮断片をロッドレンズと
光ファイバの間に挿入して光を遮断することにより、遮
断片の僅かな移動で、光を完全に遮断することができる
と言う効果が得られる。Effects of the Invention As described above, according to the present invention, by inserting the blocking piece between the rod lens and the optical fiber to block the light, it is possible to completely block the light with a slight movement of the blocking piece. You can get the effect that you can.
第１図は本発明の一実施例による光スイッチを示す斜視
図、第２図は本発明の一実施例による光スイッチの機能
を示す図、第３図は光ファイバからの光の出射ビームの
大きさを示す図、第４図は従来の光スイッチの構成図で
ある。
１１２Ｌ、１１ｂ・・・・・・光ファイバ、１３・山・
・ロッドレンズ、１４・中・・Ｖ溝、１５・・・・・・
遮断片、１６・・・・・・形状記憶合金でできたコイル
バネ、１了・・・・・・コイルバネ、１８．１９・・・
・・・光路。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名／／
ＣＵｌｂ−−−ラ已ファイノ〈
／、３−−一ロフトレンズ
でさＴ；コイル２Ｃも
／７−−−コイルへネ
第１図
／δ／９−−−″ｊｔＬ 込
第２ヌ
第３図FIG. 1 is a perspective view showing an optical switch according to an embodiment of the present invention, FIG. 2 is a diagram showing the function of an optical switch according to an embodiment of the present invention, and FIG. 3 is a diagram showing the output beam of light from an optical fiber. FIG. 4, which shows the size, is a configuration diagram of a conventional optical switch. 112L, 11b...Optical fiber, 13・Mountain・
・Rod lens, 14・Medium...V groove, 15...
Blocking piece, 16...Coil spring made of shape memory alloy, 1.....Coil spring, 18.19...
...light path. Name of agent: Patent attorney Toshio Nakao and 1 other person//
CUlb --- La phino < /, 3 --- One loft lens T; Coil 2C also /7 --- Coil head Figure 1 / δ/9 ---''jtL included Figure 2 Figure 3
Claims (3)
イバの端面が位置するように光ファイバそれぞれを対向
して配置し、上記一方の光ファイバとロッドレンズの端
面の間に遮断片を挿入して光を遮断する構成とした光ス
イッチ。(1) Arrange the optical fibers facing each other so that the end faces of the optical fibers are located at the focal points on both sides of one rod lens, and insert a blocking piece between the one optical fiber and the end face of the rod lens. An optical switch configured to block light.
に設けた特許請求の範囲第１項記載の光スイッチ。(2) The optical switch according to claim 1, wherein a rod lens and two optical fibers are provided in one V-groove.
スリーブ内に挿入した特許請求の範囲第２項記載の光ス
イッチ。(3) The optical switch according to claim 2, wherein the rod lens and the two optical fibers are each inserted into a precision sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17302086A JPS6329722A (en) | 1986-07-23 | 1986-07-23 | Optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17302086A JPS6329722A (en) | 1986-07-23 | 1986-07-23 | Optical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6329722A true JPS6329722A (en) | 1988-02-08 |
Family
ID=15952718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17302086A Pending JPS6329722A (en) | 1986-07-23 | 1986-07-23 | Optical switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6329722A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958896A (en) * | 1987-11-06 | 1990-09-25 | U.S. Philips Corp. | Optical multi-gate element with an acousto-optical modulator |
| JPH0343618U (en) * | 1989-09-06 | 1991-04-24 | ||
| US5175780A (en) * | 1988-12-29 | 1992-12-29 | Fuji Electric Co., Ltd. | Optical fiber switch |
| JP2007156142A (en) * | 2005-12-06 | 2007-06-21 | Sun Tec Kk | Optical switch and protective switch |
-
1986
- 1986-07-23 JP JP17302086A patent/JPS6329722A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958896A (en) * | 1987-11-06 | 1990-09-25 | U.S. Philips Corp. | Optical multi-gate element with an acousto-optical modulator |
| US5175780A (en) * | 1988-12-29 | 1992-12-29 | Fuji Electric Co., Ltd. | Optical fiber switch |
| JPH0343618U (en) * | 1989-09-06 | 1991-04-24 | ||
| JP2007156142A (en) * | 2005-12-06 | 2007-06-21 | Sun Tec Kk | Optical switch and protective switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020090173A1 (en) | Lens function-including optical fiber and method of producing the same | |
| JPS6432529U (en) | ||
| EP0353853B1 (en) | Laser diode to fiber reflective coupling | |
| JPS6329722A (en) | Optical switch | |
| US6751369B1 (en) | Fiber lens assembly for singlemode optical switches | |
| EP0155379A3 (en) | Arrangement for coupling a light wave guide to a semiconductor laser and method for manufacturing such an arrangement | |
| US6665462B2 (en) | Optical switch | |
| US6469835B1 (en) | Optical collimator with long working distance | |
| JPS6329220A (en) | Optical temperature sensor | |
| JPS5529825A (en) | Photo coupling device | |
| JPH08152581A (en) | Collimator and collimator array | |
| EP0159406A1 (en) | Fibre optics switch | |
| JPS5973711U (en) | Illumination device for surgical microscope | |
| JP2957189B2 (en) | Method for manufacturing semiconductor laser module | |
| JP2570738Y2 (en) | Linear optical fiber encoder structure | |
| JPH04264507A (en) | Semiconductor laser module | |
| JPH01209411A (en) | Optical coupling structure of laser diode and optical fiber | |
| JPH0244241Y2 (en) | ||
| JPS60159720A (en) | Optical switch | |
| KR100188710B1 (en) | Optical attenuator | |
| JPS6111711A (en) | Optical fiber coupler | |
| GB2375186A (en) | Optical fibre end with an increased mode size | |
| JPS63163239A (en) | Optical temperature sensor | |
| JP2003066252A (en) | Collimated lens fiber | |
| JPH0353211A (en) | Mechanical optical switch |