JPH0136264B2 - - Google Patents
Info
- Publication number
- JPH0136264B2 JPH0136264B2 JP7785481A JP7785481A JPH0136264B2 JP H0136264 B2 JPH0136264 B2 JP H0136264B2 JP 7785481 A JP7785481 A JP 7785481A JP 7785481 A JP7785481 A JP 7785481A JP H0136264 B2 JPH0136264 B2 JP H0136264B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical
- optical fiber
- thyristor
- quartz
- 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.)
- Expired
Links
- 239000010453 quartz Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 21
- 239000013307 optical fiber Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 238000005253 cladding Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4295—Coupling light guides with opto-electronic elements coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Thyristors (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
- Optical Couplings Of Light Guides (AREA)
Description
【発明の詳細な説明】
本発明は光サイリスタの光導入装置に係り、特
に光サイリスタの光感応部にゲート信号光を送る
光フアイバの伝送効率を向上させるようにした光
サイリスタの光導入装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light introduction device for an optical thyristor, and more particularly to a light introduction device for an optical thyristor that improves the transmission efficiency of an optical fiber that sends a gate signal light to a photosensitive part of an optical thyristor. .
一般に光点弧サイリスタは、ゲート信号として
電流パルスを用いる代わりに光を照射してターン
オーンさせるものでLASCRとして知られてい
る。この種サイリスタでは光サイリスタの光感応
部にゲート信号光を供給するために光フアイバが
用いられている。 Generally, a light-igniting thyristor is turned on by irradiating light instead of using a current pulse as a gate signal, and is known as a LASCR. In this type of thyristor, an optical fiber is used to supply gate signal light to the photosensitive section of the optical thyristor.
第１図は従来の光サイリスタのケース構造を示
したものであり、電極台１の上に光サイリスタ２
が載置され、この光サイリスタ２のゲート部にの
ぞんで光フアイバ３がその先端部を近接してセツ
トされている。この光フアイバ３は石英棒によつ
て構成され、光フアイバ３はケース４の金属製の
スリーブ５によつて支承されている。さらに、上
記スリーブ５と上記光フアイバ３との間のすき間
には樹脂６が装填され気密を保持するようになつ
ている。 Figure 1 shows the case structure of a conventional optical thyristor.
is mounted, and an optical fiber 3 is set with its tip end close to the gate of the optical thyristor 2. The optical fiber 3 is made of a quartz rod, and is supported by a metal sleeve 5 of the case 4. Further, a resin 6 is filled in the gap between the sleeve 5 and the optical fiber 3 to maintain airtightness.
ところが、このような従来構造の光導入装置に
よると、光フアイバ３としての石英棒の表面が樹
脂６と接するため、石英棒内を伝送されてくる光
の一部が樹脂側へ透過してしまい光の透過率が低
下してしまうという問題があつた。この透過率の
低下を防止するためには、樹脂層の屈折率を石英
よりも大幅に低下させる必要があり、樹脂の選択
に制限があつた。 However, with such a conventional light introducing device, since the surface of the quartz rod serving as the optical fiber 3 comes into contact with the resin 6, part of the light transmitted through the quartz rod is transmitted to the resin side. There was a problem that the light transmittance decreased. In order to prevent this decrease in transmittance, it is necessary to lower the refractive index of the resin layer to a greater extent than that of quartz, which imposes restrictions on the selection of resin.
本発明はこのような従来の光導入装置が有する
問題点を解消するために発明されたものであつ
て、光フアイバから樹脂層へ透過する光を防いで
光の伝送効率を向上させた光サイリスタの光導入
装置を提供することを目的とするものである。 The present invention was invented in order to solve the problems of the conventional light introducing device, and it is an optical thyristor that improves the light transmission efficiency by preventing light from transmitting from the optical fiber to the resin layer. The object of the present invention is to provide a light introduction device.
この目的を達成するために、本発明は、光サイ
リスタのゲート部にゲート信号光を伝送する光フ
アイバを配置したものにおいて、上記光フアイバ
は石英棒によつてコアが形成され、その外側にク
ラツドとしての空気層を形成したことを特徴とし
ている。なお本発明において空気層とは真空層を
も含むものとする。 In order to achieve this object, the present invention provides an optical thyristor in which an optical fiber for transmitting gate signal light is disposed in the gate part of the optical thyristor. It is characterized by the formation of an air layer. Note that in the present invention, the air layer includes a vacuum layer.
以下本発明による光サイリスタの光導入装置の
実施例を第２図乃至第５図を参照して説明する。 Embodiments of the light introducing device for an optical thyristor according to the present invention will be described below with reference to FIGS. 2 to 5.
第２図は本発明による光サイリスタの光導入装
置の一実施例を示したものであり、電極台１１の
上に光サイリスタ１２が載置されている。さらに
上記電極台１１の上には、光サイリスタ１２を内
部に収容するようにしたケース１３が被せられ、
このケース１３の上部中央には金属製のスリーブ
１４が装着されている。このスリーブ１４の内側
には、本発明によつて構成された光フアイバ１５
が上方より光サイリスタ１２のゲート部に向つて
挿入され、その端面が光サイリスタ１２のゲート
部に近接した位置で終端している。 FIG. 2 shows an embodiment of the optical thyristor light introduction device according to the present invention, in which an optical thyristor 12 is placed on an electrode stand 11. Furthermore, a case 13 is placed over the electrode stand 11, and the case 13 accommodates the optical thyristor 12 therein.
A metal sleeve 14 is attached to the upper center of the case 13. Inside this sleeve 14 is an optical fiber 15 constructed according to the present invention.
is inserted from above toward the gate portion of the optical thyristor 12, and its end surface terminates at a position close to the gate portion of the optical thyristor 12.
上記光フアイバ１５は、第３図に示されたよう
に、コアとなる真直な石英棒１６と、この石英棒
１６の外側に同軸的に被嵌された石英管１７とか
ら構成されている。これら石英棒１６と石英管１
７との間には環状のすき間１８が形成され、この
すき間１８を一定に保持するために、第３図に示
した実施例においては上下端１９および２０のと
ころで全周にわたつて溶着されている。上記すき
間１８は空気で満されあるいは真空に保たれて空
気層となつており、クラツドとして機能するよう
になつている。 As shown in FIG. 3, the optical fiber 15 is composed of a straight quartz rod 16 serving as a core, and a quartz tube 17 coaxially fitted on the outside of the quartz rod 16. These quartz rods 16 and quartz tubes 1
An annular gap 18 is formed between the top and bottom ends 19 and 20, and in order to keep this gap 18 constant, in the embodiment shown in FIG. There is. The gap 18 is filled with air or kept in a vacuum to form an air layer and function as a cladding.
上記実施例においては、すき間１８の両端部を
溶着したが、これに限らず、第４図に示したよう
に、上端のみを溶着し、下端は開口したまゝであ
つてもよい。 In the above embodiment, both ends of the gap 18 are welded, but the invention is not limited to this, and as shown in FIG. 4, only the upper end may be welded and the lower end may be left open.
さらには第５図に示したように、すき間１８の
上端を全周にわたつて溶着する一方、途中の個所
２１，２２をスポツト溶接によつて部分的に溶着
しても良い。 Furthermore, as shown in FIG. 5, while the upper end of the gap 18 is welded all around, the intermediate portions 21 and 22 may be partially welded by spot welding.
このように、本発明によれば、コアとしての石
英棒１６の外側に石英管１７を被嵌し、両者間の
すき間１８を空気層としてクラツドとすることが
でき、臨界角を小さくして石英棒１６内を伝送す
る光がクラツド側へ透過する量を少なくすること
ができる。 As described above, according to the present invention, the quartz tube 17 is fitted on the outside of the quartz rod 16 as the core, and the gap 18 between the two can be used as an air layer to form a cladding. The amount of light transmitted within the rod 16 that is transmitted to the cladding side can be reduced.
いま、第６図に示したように、石英棒１６と空
気層との境界上のＡ点に入射する光の全反射角θc
を求めると、屈折率が石英n1＝1.45、樹脂n2＝
1.35および空気n2＝1.00とすると、
θc＝sin-1n2／n1＝68゜（樹脂）、44゜（空気層）
θio＝90゜−θc＝22゜（樹脂）、46゜（空気層）
となる。その結果、空気層を設けることにより、
全反射時の光入射角θioを約２倍程大きくなるこ
とがわかる。 Now, as shown in Fig. 6, the total reflection angle θc of the light incident on the point A on the boundary between the quartz rod 16 and the air layer is
The refractive index is quartz n 1 = 1.45, resin n 2 =
1.35 and air n 2 = 1.00, θ c = sin -1 n 2 /n 1 = 68° (resin), 44° (air layer) θ io = 90° − θ c = 22° (resin), 46゜ (air layer). As a result, by providing an air layer,
It can be seen that the light incident angle θ io at the time of total reflection becomes about twice as large.
以上述べたように、本発明によれば、石英棒の
外側に石英管を同心的に被嵌し、両者間にクラツ
ドとしての空気層を設けたから、光線が全反射を
起す臨界角を小さくとつて石英棒の外へ透過する
光を防止し、その結果、光サイリスタの光感応部
にゲート信号光を送る光フアイバの伝送効率を向
上させることができる。 As described above, according to the present invention, a quartz tube is fitted concentrically to the outside of a quartz rod, and an air layer is provided between them as a cladding, so that the critical angle at which light rays undergo total reflection can be reduced. As a result, the transmission efficiency of the optical fiber that sends the gate signal light to the photosensitive part of the optical thyristor can be improved.
第１図は光サイリスタの光導入装置の従来例を
示した縦断面図、第２図は本発明による光サイリ
スタの光導入装置の一実施例を示した縦断面図、
第３図は光フアイバを拡大して示した断面図、第
４図および第５図は光フアイバの他の実施例を示
した縦断面図、第６図は光フアイバ内を通る光線
の全反射状態を説明する図である。
１２……光サイリスタ、１３……ケース、１５
……光フアイバ、１６……石英棒、１７……石英
管、１８……すき間。
FIG. 1 is a longitudinal sectional view showing a conventional example of a light introduction device for an optical thyristor, and FIG. 2 is a longitudinal sectional view showing an embodiment of the light introduction device for an optical thyristor according to the present invention.
Fig. 3 is an enlarged sectional view of the optical fiber, Figs. 4 and 5 are vertical sectional views showing other embodiments of the optical fiber, and Fig. 6 is the total reflection of light rays passing through the optical fiber. It is a figure explaining a state. 12... Optical thyristor, 13... Case, 15
...Optical fiber, 16...Quartz rod, 17...Quartz tube, 18...Gap.
Claims (1)
送する光フアイバを配置したものにおいて、上記
光フアイバは石英棒によつてコアが形成され、前
記石英棒の外側に石英管を同心的に被嵌すること
によつて前記石英棒と石英管との間に空気層を形
成することを特徴とする光サイリスタの光導入装
置。1. An optical thyristor in which an optical fiber for transmitting gate signal light is arranged in the gate part, the optical fiber has a core formed by a quartz rod, and a quartz tube is fitted concentrically to the outside of the quartz rod. A light introduction device for an optical thyristor, characterized in that an air layer is formed between the quartz rod and the quartz tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7785481A JPS57193077A (en) | 1981-05-22 | 1981-05-22 | Light guiding device for photothyristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7785481A JPS57193077A (en) | 1981-05-22 | 1981-05-22 | Light guiding device for photothyristor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57193077A JPS57193077A (en) | 1982-11-27 |
| JPH0136264B2 true JPH0136264B2 (en) | 1989-07-31 |
Family
ID=13645641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7785481A Granted JPS57193077A (en) | 1981-05-22 | 1981-05-22 | Light guiding device for photothyristor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57193077A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4855788B2 (en) * | 2006-01-31 | 2012-01-18 | 株式会社日立産機システム | Reciprocating compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521008A (en) * | 1978-07-31 | 1980-02-14 | Toshiba Corp | Photo detecting fiber launcher |
| JPS5585081A (en) * | 1978-12-21 | 1980-06-26 | Fuji Electric Co Ltd | Thyrister ignited by light |
-
1981
- 1981-05-22 JP JP7785481A patent/JPS57193077A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521008A (en) * | 1978-07-31 | 1980-02-14 | Toshiba Corp | Photo detecting fiber launcher |
| JPS5585081A (en) * | 1978-12-21 | 1980-06-26 | Fuji Electric Co Ltd | Thyrister ignited by light |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57193077A (en) | 1982-11-27 |
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