JPH02304519A - Optical coupling parts and production thereof - Google Patents
Optical coupling parts and production thereofInfo
- Publication number
- JPH02304519A JPH02304519A JP12697689A JP12697689A JPH02304519A JP H02304519 A JPH02304519 A JP H02304519A JP 12697689 A JP12697689 A JP 12697689A JP 12697689 A JP12697689 A JP 12697689A JP H02304519 A JPH02304519 A JP H02304519A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- beam splitter
- beam splitters
- electro
- light
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 90
- 230000008878 coupling Effects 0.000 title claims description 22
- 238000010168 coupling process Methods 0.000 title claims description 22
- 238000005859 coupling reaction Methods 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 27
- 239000013078 crystal Substances 0.000 claims description 33
- 239000013307 optical fiber Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 13
- 239000003822 epoxy resin Substances 0.000 description 11
- 229920000647 polyepoxide Polymers 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229920006332 epoxy adhesive Polymers 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、光ファイバを用いた光コリメータを有する光
結合部品およびその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical coupling component having an optical collimator using an optical fiber and a method for manufacturing the same.
従来の技術
従来、この種の光結合部品の一つである光分波・合波器
の実装方法は第６図に示すような構造であった。第６図
において、３１はガラスブロック。2. Description of the Related Art Conventionally, an optical demultiplexer/combiner, which is one of this type of optical coupling components, has been mounted in a structure as shown in FIG. In Fig. 6, 31 is a glass block.
３２は波長λ１の光だけを透過するフィルタ。32 is a filter that transmits only light of wavelength λ1.
３３は波長λ２の光だけを透過するフィルタ。33 is a filter that transmits only light of wavelength λ2.
３４はミラー、３６はスペーサプリズム、３６１％３６
０は屈折分布形レンズ、３７＆〜３７０は光フアイバ端
末、３８１Ｌ〜３８０は光ファイバ。34 is a mirror, 36 is a spacer prism, 361% 36
0 is a refractive index distribution lens, 37 &~370 are optical fiber terminals, and 381L~380 are optical fibers.
３９＆〜３９０はレンズ補強リング、４０２Ｌ〜４００
は光フアイバ端末補強リング、４１は光回路、４２はケ
ースである。39 &~390 are lens reinforcement rings, 402L~400
41 is an optical fiber terminal reinforcing ring, 41 is an optical circuit, and 42 is a case.
ガラスブロック３１とスペーサプリズム３６の間にフィ
ルタ３２とフィルタ３３を挾んで接着し。Filters 32 and 33 are sandwiched between glass block 31 and spacer prism 36 and adhered.
さらにガラスブロック３１にミラー３４を接着する。光
ファイ／＜３８１Ｌ〜３８０をフェルール３７＆〜３７
０に挿入固定し、屈折分布形レンズ３６４〜３６０との
光軸調整をした後、ガラス製のレンズ補強りング３９１
Ｌ〜３９０および光フアイバ端末補強リング４０１〜４
００を用いて紫外線硬化性樹脂で接着する。Further, a mirror 34 is bonded to the glass block 31. Optical fiber/<381L~380 with ferrule 37&~37
0, and after adjusting the optical axis with the gradient refractive lenses 364 to 360, the glass lens reinforcing ring 391
L~390 and optical fiber terminal reinforcement rings 401~4
00 and adhere with ultraviolet curable resin.
光ファイバ３８１Ｌから入力し屈折分布形レンズ３６１
Ｌから出射した波長λ１の平行光線はフィルタ３２を透
過して屈折分布形レンズ３６ｂに入射し、屈折分布形レ
ンズ３θｂで集光されて光ファイバ３８ｂに結合する。Input from optical fiber 381L and refractive index distribution lens 361
The parallel light beam of wavelength λ1 emitted from L passes through the filter 32, enters the gradient refractive lens 36b, is condensed by the gradient refractive lens 3θb, and is coupled to the optical fiber 38b.
光軸調整をした後、屈折分布形レンズ３６１Ｌおよびレ
ンズ補強りング３９１Ｌをガラスブロック３１に、屈折
分布形レンズ３６ｂおよびレンズ補強リング３９ｂをス
ペーサプリズム３６に接着剤を用いてそれぞれ接着固定
する。After adjusting the optical axis, the gradient refractive index lens 361L and the lens reinforcing ring 391L are fixed to the glass block 31, and the gradient refractive index lens 36b and the lens reinforcing ring 39b are fixed to the spacer prism 36 using an adhesive.
一方、光ファイバ３８＆から入射した波長λ２は屈折分
布形レンズ３６！Ｌで平行光線に変換された後フィルタ
３２とミラー３４で反射され、フィルタ３３を透過して
屈折分布形レンズ３６０に入射し、屈折分布形レンズ３
ｅａで集光されて光ファイバ３８Ｃから出力する。光軸
調整をした後。On the other hand, the wavelength λ2 incident from the optical fiber 38& is the gradient refractive lens 36! After being converted into parallel rays by L, it is reflected by the filter 32 and mirror 34, passes through the filter 33, enters the gradient refractive lens 360, and enters the gradient refractive lens 360.
The light is focused by ea and output from the optical fiber 38C. After adjusting the optical axis.
屈折分布形レンズ３６０およびレンズ補強リング３９０
を接着剤を用いて接着固定する。Gradient lens 360 and lens reinforcement ring 390
Adhesive and fix using adhesive.
このようにして製作した光回路４１をケース４２に入れ
、ガラスブロック３１の底面だけにケース４２に接触さ
せて樹脂で固定するものであった。The optical circuit 41 manufactured in this manner was placed in a case 42, and fixed with resin so that only the bottom surface of the glass block 31 came into contact with the case 42.
（特開昭６２−１８７３０６号公報）
発明が解決しようとする課題
このような従来の構成では、光結合部品を構成する光学
部品が主にガラスで出来ているので、接着剤を用いて接
合している。接着時間を短縮して生産性を向上するため
に紫外線硬化性樹脂を使用する場合もあるが、紫外線硬
化性樹脂はアクリル基を含んでいるためにアセトン等の
溶剤に対して弱く、高い信頼性を確保することが難しい
。したがって、接着剤としては信頼性の高い熱硬化性エ
ポキシ樹脂を用いて接着していた。しかし、熱硬化性樹
脂を硬化するには光学部品の光軸を調整した段階で加熱
しなければならないので、その間組立治具を占有するた
めに他の光結合部品を製作することができず、製造能率
が極めて悪いという問題があった。(Japanese Unexamined Patent Publication No. 187306/1983) Problems to be Solved by the Invention In such a conventional configuration, since the optical components constituting the optical coupling component are mainly made of glass, it is difficult to bond them together using an adhesive. ing. UV-curable resins are sometimes used to shorten bonding time and improve productivity, but since UV-curable resins contain acrylic groups, they are sensitive to solvents such as acetone, making them highly reliable. difficult to secure. Therefore, a highly reliable thermosetting epoxy resin has been used as the adhesive for bonding. However, in order to cure the thermosetting resin, it is necessary to heat it after adjusting the optical axis of the optical component, which occupies the assembly jig during that time, making it impossible to manufacture other optical coupling components. There was a problem that manufacturing efficiency was extremely low.
本発明はこのような課題を解決するもので、光軸調整後
の光結合部品を組立治具から取り外して熱硬化性樹脂を
硬化し、光結合部品の生産性を高めようとするものであ
る。The present invention aims to solve these problems by removing the optical coupling component from the assembly jig after adjusting the optical axis and curing the thermosetting resin, thereby increasing the productivity of the optical coupling component. .
課題を解決するための手段
この課題を解決するために本発明は、２つのビームスプ
リッタとその間の光学部品の光軸調整をしたのち、これ
らを補助固定板に速硬化性樹脂で固定し、その後組立治
具から取り外して光学部品部の熱硬化性樹脂を高温槽内
で硬化するものである。Means for Solving the Problem In order to solve this problem, the present invention adjusts the optical axes of two beam splitters and the optical components between them, then fixes them to an auxiliary fixing plate with a fast-curing resin, and then It is removed from the assembly jig and the thermosetting resin of the optical component is cured in a high temperature bath.
作用
この構成によシ、光結合部品の組立治具は光軸調整の時
だけ使用し、熱硬化性樹脂を硬化する時は治具から取り
外すので組立治具の稼動率を上げて、生産性を高めるこ
とができる。Function: With this configuration, the assembly jig for the optical coupling component is used only for optical axis adjustment, and is removed from the jig when curing the thermosetting resin, increasing the utilization rate of the assembly jig and increasing productivity. can be increased.
実施例
第１図は本発明の一実施例による光結合部品である光電
圧センサの構成を示す図である。第１図において１，４
は偏光ビームスグリツタ、２は１／４波長板、３は電気
光学結晶、６は補助固定板、６．７１Ｌ−７６は樹脂、
８ａ、ｓｂはロッドレンズ、９１，９ｂｉｄレンズホル
ダ、１０１Ｌ。Embodiment FIG. 1 is a diagram showing the configuration of an optical voltage sensor which is an optical coupling component according to an embodiment of the present invention. 1, 4 in Figure 1
is a polarizing beam sinter, 2 is a quarter-wave plate, 3 is an electro-optic crystal, 6 is an auxiliary fixing plate, 6.71L-76 is a resin,
8a, sb are rod lenses, 91, 9bid lens holder, 101L.
１ｏｂは光７．イバ端末、１１！Ｌ、１１ｂは割シスリ
ーブ、１２１Ｌ、１２ｂは光ファイバのジャケット部、
１３＆、１３ｂは光ファイバ、１４は入力光、１６は出
射光、１６〜２０は平行光線である。1ob is light 7. Iba terminal, 11! L, 11b are split sleeves, 121L, 12b are optical fiber jacket parts,
13&, 13b are optical fibers, 14 is input light, 16 is output light, and 16 to 20 are parallel light rays.
まず始めに電圧光センサの動作について説明する。第２
図は電圧光センサの動作を示す図で、第２図において２
１〜２６は光、２６〜３ｏは各党の偏光面の状態を示す
。First, the operation of the voltage optical sensor will be explained. Second
The figure shows the operation of the voltage optical sensor.
1 to 26 indicate light, and 26 to 3o indicate the state of the polarization plane of each party.
２つの偏光面２６を持つ光２１が偏光ビームスプリッタ
１に入射すると一つの偏光面２７の光２２のみが透過す
る。１／４波長板２の光軸が偏光ビームスプリッタ１の
対角線方向に一致しているので、光２２が１／４波長板
２を透過すると偏光状態が円偏光２８の光２３に変換さ
れてニオブ酸リチウム結晶よりなる電気光学結晶３に入
射する。この電気光学結晶３の電極（図示せず）に電圧
を印加すると、電気光学結晶３の持つ電気光学効果によ
ってその屈折率が変化するので、電気光学結晶３を透過
した光２４の偏光面２９は楕円偏光になる。光２４が偏
光ビームスプリッタ４を透過するときに直線偏光３ｏの
みを持つ光２５だけが出力される。光２６の光量はニオ
ブ酸リチウム結晶よりなる電気光学結晶３に印加する電
圧の大きさに比例して変化するので、電圧を光量の変化
で測定することができることとなる。When light 21 having two polarization planes 26 enters the polarizing beam splitter 1, only the light 22 of one polarization plane 27 is transmitted. Since the optical axis of the quarter-wave plate 2 coincides with the diagonal direction of the polarizing beam splitter 1, when the light 22 passes through the quarter-wave plate 2, the polarization state is converted to circularly polarized light 28 and the niobium The light is incident on an electro-optic crystal 3 made of lithium oxide crystal. When a voltage is applied to the electrodes (not shown) of the electro-optic crystal 3, the refractive index changes due to the electro-optic effect of the electro-optic crystal 3, so that the polarization plane 29 of the light 24 transmitted through the electro-optic crystal 3 is It becomes elliptically polarized light. When the light 24 passes through the polarizing beam splitter 4, only the light 25 having only the linearly polarized light 3o is output. Since the amount of light 26 changes in proportion to the magnitude of the voltage applied to the electro-optic crystal 3 made of lithium niobate crystal, the voltage can be measured by changes in the amount of light.
以下１本発明の第１の実施例について説明する。A first embodiment of the present invention will be described below.
直径２ｒｒｒＩｎのロッドレンズｓａ 、ａｂは偏光ビ
ームスプリッタ１および偏光ビームスプリッタ４に直径
２ｆｆ！ｆｆｉ孔の開いたレンズホルダｓａ、９ｂを用
いて、熱硬化性エポキシ接着剤７ａ、７ｅで接着し、接
着強度を高めている。光ファイバ１３を挿入して先端を
鏡面研磨したセラミック製フェルール１０ａ、１ｏｂは
セラミック製の割りスリーブ１１ａ、１１ｂでＣｆ、ド
レンズ８１Ｌ、８ｂと光学的に接続する。フェルール１
０１Ｌ、１０ｂおよび割りスリーブ１１ａ、１１ｂをセ
ラミック製としているのは、金属性のものを使用すると
フェルール１０ａ 、 １０ｂヤ割りスリーブ１１１Ｌ
、１１ｂにもある程度の電位が発生し、電圧センサの感
度に影響を与えることが考えられるので、金属性のもの
を使用していない。偏光ビームスプリッタ１．１７４波
長板２および電気光学結晶３は熱硬化性エポキシ接着剤
７ａおよび７ｂで接着固定する。Rod lenses sa and ab with a diameter of 2rrrIn are attached to the polarizing beam splitter 1 and the polarizing beam splitter 4 with a diameter of 2ff! Lens holders sa and 9b with ffi holes are used to bond them with thermosetting epoxy adhesives 7a and 7e to increase bonding strength. Ceramic ferrules 10a and 1ob into which the optical fiber 13 is inserted and whose tips are mirror-polished are optically connected to Cf and drain lenses 81L and 8b using ceramic split sleeves 11a and 11b. Ferrule 1
01L, 10b and the split sleeves 11a, 11b are made of ceramic because if metal ones are used, the ferrules 10a, 10b and the split sleeves 111L
, 11b also generate a certain amount of potential, which may affect the sensitivity of the voltage sensor, so metal materials are not used. Polarizing beam splitter 1, 174 wavelength plate 2 and electro-optic crystal 3 are adhesively fixed with thermosetting epoxy adhesives 7a and 7b.
電気光学結晶３と偏光ビームスプリッタ４は透明ガラス
板６と紫外線硬化性樹脂６で仮止めした後。After the electro-optic crystal 3 and the polarizing beam splitter 4 are temporarily fixed with a transparent glass plate 6 and an ultraviolet curing resin 6.
電気光学結晶３と偏光ビームスプリッタ４の間に塗布し
た熱硬化性エポキシ接着剤７Ｃを硬化して接着固定して
いる。A thermosetting epoxy adhesive 7C applied between the electro-optic crystal 3 and the polarizing beam splitter 4 is cured and fixed.
フェルール１０１Ｌに固定した光ファイバ１３＆から入
射した光１４は割りスリーブ１１！Ｌで接続したロッド
レンズ８＆から平行光線１６として出射される。平行光
線１６は偏光ビームスプリッタ１の反射面で直線偏光の
平行光線１７が反射される。１７４波長板２を透過した
平行光線１８は円偏光に変換されて電気光学結晶３に入
射する。電気光学結晶３には電極（図示せず）に電圧を
印加しているので、電気光学結晶３を通過した平行光線
１９は楕円偏光になる。平行光線１９は偏光ビームスプ
リッタ４で特定の直線偏光２０を選択的に反射してロッ
ドレンズ８ｂに入射する。ロッドレンズ８ｂは光を集光
して割シスリーブ１１ｂで接続したフェルール１０ｂに
固定された光ファイバ１３ｂに光学的に接続した光１６
を出力する。The light 14 incident from the optical fiber 13 & fixed to the ferrule 101L is transmitted to the split sleeve 11! Parallel light rays 16 are emitted from rod lenses 8 & connected by L. The parallel light beam 16 is a linearly polarized parallel light beam 17 that is reflected by the reflecting surface of the polarizing beam splitter 1 . The parallel light beam 18 transmitted through the 174-wavelength plate 2 is converted into circularly polarized light and enters the electro-optic crystal 3. Since a voltage is applied to an electrode (not shown) of the electro-optic crystal 3, the parallel light ray 19 passing through the electro-optic crystal 3 becomes elliptically polarized light. The parallel light beam 19 selectively reflects a specific linearly polarized light 20 by the polarizing beam splitter 4 and enters the rod lens 8b. The rod lens 8b condenses light, and the light 16 is optically connected to an optical fiber 13b fixed to a ferrule 10b connected by a split sleeve 11b.
Output.
ガラス板６は光学的な結合には寄与しないが。Although the glass plate 6 does not contribute to optical coupling.
電圧光センサを構成するときに重要な役割を果たすので
、以下第３図を用いて電圧光センサの製作方法について
説明する。Since it plays an important role when constructing a voltage optical sensor, a method for manufacturing the voltage optical sensor will be explained below using FIG. 3.
電圧光センサを構成するとき、まず始めにそれぞれ１辺
が６順の偏光ビームスプリッタ１と１／４波長板２およ
び長さが８順の電気光学結晶３を熱硬化性エポキシ樹脂
Ｔ＆および７ｂでそれぞれ接着し、治具を用いて接着部
に圧力を加えながら高温槽（９０℃）内で硬化する。When constructing a voltage optical sensor, first, a polarizing beam splitter 1 and a quarter-wave plate 2 each having a length of 6 on each side, and an electro-optic crystal 3 having a length of 8 on each side are made of thermosetting epoxy resin T& and 7b. Each is adhered and cured in a high temperature bath (90° C.) while applying pressure to the bonded portion using a jig.
次に外径が５職のレンズホルダ９Ｎ 、９ｂにロッドレ
ンズ８ａ、８ｂを接着固定した後、光ファイバのジャケ
ット部１２！Ｌ 、 １２ｂおよび光ファイバ１３１Ｌ
、１３ｂを接着固定し、先端を鏡面研磨したフェルール
１０＆、１０ｂを割シスリーブ１１１Ｌ、１１ｂに挿入
して接続する。ロッドレンズ８＆、８ｂおよび７エＡ／
−／Ｉ／１０ａ、 １０ｂの先端にはテーパー加工を施
しているので、ロッドレンズａａ、８ｂの縁が欠けるこ
とがなく１割りスリーブ１１ａ、１１ｂに簡単に挿入す
ることができる。レンズホルダ９１Ｌ、９ｂおよびロッ
ドレンズｓａ 、ａｂを偏光ビームスプリッタ１および
偏光ビームスプリッタ４に熱硬化性エポキシ樹脂７ｄお
よび７ｅで接着し、治具を用いて接着部に圧力を加えな
がら高温槽（９０”Ｃ）内で硬化する。Next, after adhering and fixing the rod lenses 8a and 8b to the lens holders 9N and 9b with an outer diameter of 5, the optical fiber jacket part 12! L, 12b and optical fiber 131L
, 13b are fixed with adhesive, and the ferrules 10&, 10b with mirror-polished tips are inserted into the split sleeves 111L, 11b and connected. Rod lens 8&, 8b and 7air A/
Since the tips of -/I/10a and 10b are tapered, the edges of rod lenses aa and 8b are not chipped and can be easily inserted into split sleeves 11a and 11b. Lens holders 91L, 9b and rod lenses sa, ab are bonded to polarizing beam splitter 1 and polarizing beam splitter 4 with thermosetting epoxy resins 7d and 7e, and heated in a high temperature bath (90 "C) hardens within.
ここまでの製作は光学部品の加工精度に基づいて機械的
に熱硬化性エポキシ樹脂７で接着固定する。In the manufacturing up to this point, the optical components are mechanically adhesively fixed with thermosetting epoxy resin 7 based on the processing precision of the optical components.
その後、光軸調整治具を用いて光ファイバ１３！Ｌから
入射した光１４が光ファイバ１３ｂから光１６が小さな
結合損失で出力するように光軸調整を行う。光軸調整後
、電気光学結晶３と偏光ビームスプリッタ４に熱硬化性
エポキシ樹脂７ｃを塗布して光軸を再調整する。その後
、偏光ビームスプリッタ１．１／４波長板２．電気光学
結晶３および偏光ビームスプリッタ４の上面に紫外線硬
化性樹脂６を塗布したのちガラス板６を乗せ、紫外線照
射装置（図示せず）で紫外線を照射して紫外線硬化性樹
脂ｅを硬化する。光結合はコリメータを使用し、また、
光ファイバ１３！Ｌにはコア径８０μ論の光フアイバ光
を、ファイバ１３ｂにはコア径２ｏＯμｍの光ファイバ
を用いている。紫外線硬化性樹脂６の硬化時に生じる位
置ずれは約１００μｍ以下なので、結合損失の変化はｏ
、１ｄＢ以下と大変率さい。この状態で光学部品を光軸
調整治具から取り外し、高温槽（９０’Ｃ）内で熱硬化
性エポキシ樹脂７Ｃを硬化する。紫外線硬化性樹脂６を
高温の雰囲気中に長時間放置するとその接着力は低下す
るおそれがあるが、放置時間が短時間（２〜３時間以内
）であれば接着力に問題はないので、結合損失を低下さ
せることなく熱硬化性エポキシ樹脂７Ｃを硬化すること
ができる。熱硬化性エポキシ樹脂７ｃの硬化後の結合損
失の低下は。After that, use the optical axis adjustment jig to connect the optical fiber 13! The optical axis is adjusted so that the light 14 incident from L is outputted from the optical fiber 13b as light 16 with small coupling loss. After adjusting the optical axis, a thermosetting epoxy resin 7c is applied to the electro-optic crystal 3 and the polarizing beam splitter 4 to readjust the optical axis. After that, polarizing beam splitter 1.1/4 wavelength plate 2. After applying an ultraviolet curable resin 6 to the upper surfaces of the electro-optic crystal 3 and the polarizing beam splitter 4, a glass plate 6 is placed thereon, and an ultraviolet ray irradiation device (not shown) is used to irradiate the ultraviolet rays to cure the ultraviolet curable resin e. Optical coupling uses a collimator, and
Optical fiber 13! An optical fiber with a core diameter of 80 μm is used for L, and an optical fiber with a core diameter of 200 μm is used for the fiber 13b. Since the positional shift that occurs during curing of the ultraviolet curable resin 6 is approximately 100 μm or less, the change in coupling loss is
, less than 1dB. In this state, the optical component is removed from the optical axis adjustment jig, and the thermosetting epoxy resin 7C is cured in a high temperature bath (90'C). If the ultraviolet curable resin 6 is left in a high-temperature atmosphere for a long time, its adhesive strength may decrease, but if it is left for a short time (within 2 to 3 hours), there will be no problem with the adhesive strength, and the bond will be Thermosetting epoxy resin 7C can be cured without reducing loss. What is the reduction in bond loss after curing of the thermosetting epoxy resin 7c?
光軸調整時と比較して最大ｏ、１ｄ Ｂ程度である。The maximum is about o, 1dB compared to when adjusting the optical axis.
このように、紫外線硬化性樹脂６を用いて電圧光センサ
の仮止めをした後、熱硬化性エポキシ樹脂７を熱硬化す
ることにより、光結合部品の性能を低下させずに光軸調
整治具の占有時間を短くすることができるので、電圧光
センサの生産性を向上できるという効果が得られる。In this way, by temporarily fixing the voltage optical sensor using the ultraviolet curable resin 6 and then thermosetting the thermosetting epoxy resin 7, the optical axis adjustment jig can be used without deteriorating the performance of the optical coupling component. Since the occupied time can be shortened, the productivity of the voltage optical sensor can be improved.
なお、補助固定板５はガラス板６としたが、補助固定板
６はセラミック板でも良い。セラミック板の場合は紫外
線を透過しないので、この場合。Although the auxiliary fixing plate 5 is a glass plate 6, the auxiliary fixing plate 6 may be a ceramic plate. In this case, ceramic plates do not transmit ultraviolet rays.
紫外線をビームスプリッタ１，４および電気光学結晶３
の側面下方から照射することによって紫外線硬化性樹脂
６を硬化することができる。Ultraviolet rays are transmitted through beam splitters 1 and 4 and electro-optic crystal 3.
The ultraviolet curable resin 6 can be cured by irradiating the side surface from below.
第４図は本発明の第２の実施例の電圧光センサの構成を
示す。第２の実施例の電圧光センサの構成が第１の実施
例と異なる点は、コの字の形状のガラス板６′の脚部上
に偏光ビームスプリッタ１および偏光ビームスプリッタ
４だけを紫外線硬化性樹脂６で接着し、１／４波長板２
および電気光学結晶３は接着していないことである。電
圧光センサの製作の順序は第１の実施例で説明した電圧
光センサと同じである。FIG. 4 shows the configuration of a voltage optical sensor according to a second embodiment of the present invention. The difference in the configuration of the voltage optical sensor of the second embodiment from the first embodiment is that only the polarizing beam splitter 1 and the polarizing beam splitter 4 are placed on the legs of the U-shaped glass plate 6' by ultraviolet curing. Glue with synthetic resin 6 and attach 1/4 wavelength plate 2.
and that the electro-optic crystal 3 is not bonded. The order of manufacturing the voltage optical sensor is the same as that of the voltage optical sensor described in the first embodiment.
ニオブ酸リチウム結晶よりなる電気光学結晶３は温度変
化や歪みに対して比較的に敏感なので。The electro-optic crystal 3 made of lithium niobate crystal is relatively sensitive to temperature changes and distortion.
できるだけニオブばリチウム結晶よりなる電気光学結晶
３に付着するものが少ないほうがよい。そこで、できる
だけニオブ酸リチウム結晶よりなる電気光学結晶３に不
要な歪みを与えないために偏光ビームスプリッタ１と偏
光ビームスプリッタ４だけをガラス板６′で紫外線硬化
性樹脂６を用いて仮固定する構成にしている。また、偏
光ビームスプリッタ４の側面に塗布した紫外線硬化性樹
脂６と偏光ビームスプリッタ４とニオブ酸リチウム結晶
よりなる電気光学結晶３の間に挾んだ熱硬化性エポキシ
樹脂７Ｇは混じることがないので、それぞれの樹脂を確
実に硬化することができる。It is better that as little as possible adheres to the electro-optic crystal 3 made of niobium and lithium crystals. Therefore, in order to avoid causing unnecessary distortion to the electro-optic crystal 3 made of lithium niobate crystal, only the polarizing beam splitter 1 and the polarizing beam splitter 4 are temporarily fixed to a glass plate 6' using an ultraviolet curable resin 6. I have to. In addition, the ultraviolet curable resin 6 applied to the side surface of the polarizing beam splitter 4 and the thermosetting epoxy resin 7G sandwiched between the polarizing beam splitter 4 and the electro-optic crystal 3 made of lithium niobate crystal do not mix. , each resin can be reliably cured.
またニオブ酸リチウム結晶よりなる電気光学結晶３は１
／４波長板２と偏光ビームスプリッタ４にだけ接着して
いるので、この電気光学結晶３の電極（図示せず）から
印加した電圧を精度よく光強度に変換できることとなる
。Further, the electro-optic crystal 3 made of lithium niobate crystal is 1
Since it is bonded only to the /4 wavelength plate 2 and the polarizing beam splitter 4, the voltage applied from the electrodes (not shown) of the electro-optic crystal 3 can be converted into light intensity with high accuracy.
発明の効果
以上のごとく本発明は光コリメータを接合した２つのビ
ームスプリッタを光学結合するように設け、この２つの
ビームスプリッタの間に少なくとも１つ以上の光学部品
設け、少なくとも２つのビームスプリッタを、補助固定
板に、速硬化性樹脂で仮固定した後、ビームスプリッタ
と光学部品を熱硬化性樹脂で高温雰囲気中で硬化するも
のである。このため光部品の組立装置は光軸調整時にだ
け使用し、熱硬化性樹脂の硬化時は組立装置から取り外
して行えるので、光部品の組立装置の稼動率が高くな９
、生産性が向上する。Effects of the Invention As described above, the present invention provides two beam splitters joined with optical collimators so as to be optically coupled, at least one or more optical components are provided between the two beam splitters, and the at least two beam splitters are After temporarily fixing to the auxiliary fixing plate with a fast-curing resin, the beam splitter and optical components are cured with a thermosetting resin in a high-temperature atmosphere. For this reason, the optical component assembly device is used only for optical axis adjustment and can be removed from the assembly device when curing the thermosetting resin, increasing the operating rate of the optical component assembly device.
, productivity improves.
またこの補助固定板はビームスプリッタの光路外を接着
しているので、補助固定板による光学的な特性劣化はな
いばかりでなく、光学部品の接着強度をも補強できると
言う効果が得られる。Furthermore, since this auxiliary fixing plate adheres outside the optical path of the beam splitter, not only is there no optical characteristic deterioration caused by the auxiliary fixing plate, but also the adhesive strength of the optical components can be reinforced.
第１図は本発明の一実施例による光結合部品による電圧
光センサを示す構成図、第２図は電圧光センサの動作原
理を説明するための電圧光センサの構成図、第３図（＆
）〜（４は本発明の一実施例による光結合部品による電
圧光センサの製作方法、順序を説明する図、第４図は本
発明の他の実施例による光結合部品を用いた電圧光セン
サを示す構成図、第６図は従来の光結合備品の構成を示
す構成図である。
１．４・・・・・・偏光ビームスプリッタ、２・・・・
・・１／４波長板、３・・・・・・電気光学結晶、５，
５’・・・・・・補助固定板、６・・・・・・紫外線硬
化性樹脂、７１Ｌ〜７ｅ・・・・・・熱硬化性エポキシ
樹脂、８＆、８ｂ・・・・・・ロッドレンズ、ｓａ、ｓ
ｂ・・・・・・レンズホルダ、１０１Ｌ。
１ｏｂ・・・・・・７エルール、１１ａ、１１ｂ、・・
１００割シス’）−７”、１２・・・・・・光ファイバ
のジャケラｌ、１３１Ｌ、１３ｂ・・・・・・光ファイ
バ、１４・・・・・・入力光。
１６・・・・・・出射光、１６〜２ｏ・川・・平行光線
、２１〜２５・・・・・・光。
代理人の氏名 弁理士 粟 野 重 孝 はが１名３−
・−篭気光零縛品
８ｅＬ、 ８ｂ−・＝ロッドレンズ
ｑＬ、 ｑｂ−レンズホルダ
／？（Ｌ、Ｊｏｂ−・７エルール
１５− 出！Ｌ尤
１６〜υ・−平乃光県
２１ヤ乙−−−光
Ｎ ２ 図 ２ｇ勺３０・−，１）−
光の偵光閲のＪ大急２６ ２７ ２８
２Ｆ３０第３図
っ４ ’：２ Ｓ’−ｚｎ’Ｊ′
ｔｎ″゛２７６δ′
第５図FIG. 1 is a configuration diagram showing a voltage optical sensor using an optical coupling component according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a voltage optical sensor for explaining the operating principle of the voltage optical sensor, and FIG.
) to (4 is a diagram explaining the method and order of manufacturing a voltage optical sensor using an optical coupling component according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating a voltage optical sensor using an optical coupling component according to another embodiment of the present invention. FIG. 6 is a block diagram showing the structure of a conventional optical coupling equipment. 1.4 Polarizing beam splitter, 2...
...1/4 wavelength plate, 3... Electro-optic crystal, 5,
5'... Auxiliary fixing plate, 6... Ultraviolet curing resin, 71L to 7e... Thermosetting epoxy resin, 8&, 8b... Rod lens , sa, s
b...Lens holder, 101L. 1ob...7 Elur, 11a, 11b,...
100% cis')-7”, 12... Optical fiber jacket l, 131L, 13b... Optical fiber, 14... Input light. 16...・Outgoing light, 16~2o・River...Parallel rays, 21~25...Light. Agent's name Patent attorney Shigetaka Awano 1 person 3-
・-Clock light zero-binding product 8eL, 8b-・=rod lens qL, qb-lens holder/? (L, Job-・7 Erul 15- Out! L尤16〜υ・-Hirano Hikari Prefecture 21 Yaot---Hikari N 2 Figure 2g勺30・-,1)-
Reconnaissance of light J Daikyu 26 27 28
2F30 3rd figure 4':2 S'-zn'J'
tn″゛276δ′ Figure 5
Claims (4)
ームスプリッタ間に、少なくとも１つ以上の光学部品を
設け、少なくとも前記２つのビームスプリッタを、一つ
の補助固定部材に速硬化性樹脂で固定した光結合部品。(1) At least one or more optical components were provided between two beam splitters each optically connected to an optical fiber, and at least the two beam splitters were fixed to one auxiliary fixing member with a quick-curing resin. Optical coupling parts.
プリッタを、コの字の脚部上に接合するとともに、光学
部品として電気光学結晶を用いた特許請求の範囲第１項
記載の光結合部品。(2) The auxiliary fixing plate is shaped like a U-shape, the two beam splitters are joined onto the legs of the U-shape, and an electro-optic crystal is used as the optical component. Optical coupling parts.
タに少なくとも１つ以上の光学部品を縦列に熱硬化性樹
脂で接着した後に、この光学部品に、熱硬化性樹脂を介
して光コリーメータを接合した第２のビームスプリッタ
を当接させ、次にこれらの第１のビームスプリッタ、光
学部品および第２のビームスプリッタを補助固定板に速
硬化性樹脂で接着し、その後、前記光学部品と第２のビ
ームスプリッタ間の熱硬化性樹脂を硬化させる光結合部
品の製造方法。(3) After bonding at least one optical component in a column with a thermosetting resin to the first beam splitter to which the optical collimator is attached, the optical collimator is attached to this optical component via the thermosetting resin. The joined second beam splitter is brought into contact with the first beam splitter, the optical component, and the second beam splitter are bonded to the auxiliary fixing plate with a fast-curing resin, and then the optical component and the second beam splitter are bonded together. A method of manufacturing an optical coupling component by curing a thermosetting resin between two beam splitters.
いた特許請求の範囲第３項記載の光結合部品の製造方法
。(4) A method for manufacturing an optical coupling component according to claim 3, using an electro-optic crystal and a quarter-wave plate as the optical component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1126976A JP2797431B2 (en) | 1989-05-19 | 1989-05-19 | Manufacturing method of optical coupling parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1126976A JP2797431B2 (en) | 1989-05-19 | 1989-05-19 | Manufacturing method of optical coupling parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02304519A true JPH02304519A (en) | 1990-12-18 |
| JP2797431B2 JP2797431B2 (en) | 1998-09-17 |
Family
ID=14948559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1126976A Expired - Fee Related JP2797431B2 (en) | 1989-05-19 | 1989-05-19 | Manufacturing method of optical coupling parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2797431B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05224109A (en) * | 1992-02-14 | 1993-09-03 | Kyocera Corp | Production of image device |
| JP2001096802A (en) * | 1999-10-04 | 2001-04-10 | Canon Inc | Method for production of led array head |
| CN109387951A (en) * | 2018-12-07 | 2019-02-26 | 中国工程物理研究院激光聚变研究中心 | The Alignment technology of optical device dress smoothing platform and single port diameter electrooptical switching |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639611A (en) * | 1986-06-27 | 1988-01-16 | Hino Motors Ltd | Particulate removing device |
-
1989
- 1989-05-19 JP JP1126976A patent/JP2797431B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639611A (en) * | 1986-06-27 | 1988-01-16 | Hino Motors Ltd | Particulate removing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05224109A (en) * | 1992-02-14 | 1993-09-03 | Kyocera Corp | Production of image device |
| JP2001096802A (en) * | 1999-10-04 | 2001-04-10 | Canon Inc | Method for production of led array head |
| CN109387951A (en) * | 2018-12-07 | 2019-02-26 | 中国工程物理研究院激光聚变研究中心 | The Alignment technology of optical device dress smoothing platform and single port diameter electrooptical switching |
| CN109387951B (en) * | 2018-12-07 | 2023-09-22 | 中国工程物理研究院激光聚变研究中心 | Assembling and calibrating process for single-aperture electro-optical switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2797431B2 (en) | 1998-09-17 |
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