JPH01179106A - Optical connector - Google Patents
Optical connectorInfo
- Publication number
- JPH01179106A JPH01179106A JP63002801A JP280188A JPH01179106A JP H01179106 A JPH01179106 A JP H01179106A JP 63002801 A JP63002801 A JP 63002801A JP 280188 A JP280188 A JP 280188A JP H01179106 A JPH01179106 A JP H01179106A
- Authority
- JP
- Japan
- Prior art keywords
- optical connector
- thin film
- adapter
- refractive index
- optical
- 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 53
- 239000010409 thin film Substances 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 abstract description 7
- 239000010408 film Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 239000004519 grease Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000002492 Rungia klossii Nutrition 0.000 description 1
- 244000117054 Rungia klossii Species 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は光通信において、光コネクタアダプタ内に光コ
ネクタプラグを挿入することにより、光ファイバの接続
を実現する光コネクタ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 connector in optical communication, which realizes connection of optical fibers by inserting an optical connector plug into an optical connector adapter.
（従来技術）
光コネクタの結合において、光コネクタプラグの接合端
面間に空気層が存在する場に、両端面間で反射が繰り返
され戻り光が生じる。これを防止する方法としてグリス
、オイル等の光透過性の物質を、光コネクタ結合時に光
コネクタプラグの結合端面に付着させる方法が広く利用
されている。(Prior Art) In coupling optical connectors, when an air layer exists between the joining end faces of an optical connector plug, reflections are repeated between both end faces and return light is generated. As a method for preventing this, a method is widely used in which a light-transmitting substance such as grease or oil is applied to the coupling end surface of the optical connector plug when the optical connector is coupled.
又このようなグリス、オイル等の付着の取り扱い性の悪
さを改善するために、光コネクタプラグの接合端面を凸
球面状に研磨し、光フアイバ同志を直接接触させるＰＣ
形コネクタも提案され、広く利用されている。（昭和８
０年電子通信学会「総合全国大会２８Ｏ８Ｊ等）
（解決しようとする問題点）
上述した従来の方法のうち、前者のグリス、オイル等の
光透過性物質を使用する方法は、光コネクタを若脱する
都度、接合端面に光透過性物質を付着する必要があり、
取り扱い性が悪いという問題点がある。In addition, in order to improve the ease of handling due to the adhesion of grease, oil, etc., the joining end surface of the optical connector plug is polished into a convex spherical shape, and the optical fibers are brought into direct contact with each other.
Type connectors have also been proposed and are widely used. (Showa 8
2008 Institute of Electronics and Communication Engineers ``Comprehensive National Conference 28O8J, etc.'' (Problems to be solved) Of the conventional methods mentioned above, the former method of using optically transparent substances such as grease and oil is a It is necessary to attach a light-transmitting substance to the joint end face each time.
There is a problem that it is difficult to handle.
又この問題点を改善するために提案された後者のＰＣ形
コネクタは、取り扱い性はすぐれているものの、接合端
面を凸球面状にするために、端面の研り方法として、特
殊な研市方法を用いなければならず、しかも、凸球面状
にするために加工時間がかかること、及び単心コネクタ
では比較的簡単であるが、多心コネクタにおいてはかま
ぼこ伏に処理する必要があり、特別な研磨装置を使用し
なければならないという問題点があった。The latter PC type connector, which was proposed to improve this problem, is easy to handle, but in order to make the mating end surface into a convex spherical shape, a special polishing method was used to sharpen the end surface. In addition, it takes time to process to make a convex spherical shape, and although it is relatively easy for single-fiber connectors, multi-fiber connectors need to be processed in a semicircular shape, and special processing is required. There was a problem in that a polishing device had to be used.
（問題点を解決するための手段）
本発明は上述の問題点を解消し、光コネクタプラグの加
工精度を高めることなく、取り扱い性のよい光コネクタ
を提供するもので、その特徴は、光コネクタアダプタ内
に光コネクタプラグの挿入方向と直交して光透過性で、
かつガラスより高屈折率の結合薄膜を設けたことにある
。(Means for Solving the Problems) The present invention solves the above-mentioned problems and provides an optical connector that is easy to handle without increasing the processing accuracy of the optical connector plug. The inside of the adapter is optically transparent, perpendicular to the insertion direction of the optical connector plug.
Another reason is that a bonding thin film with a higher refractive index than glass is provided.
第１図は本発明の光コネクタにおけるアダプタの外観図
、第２図は光コネクタプラグを挿入した状態の第１図の
上面に平行な面における断面図である。FIG. 1 is an external view of an adapter in the optical connector of the present invention, and FIG. 2 is a sectional view taken in a plane parallel to the top surface of FIG. 1 with an optical connector plug inserted.
図面はブツシュ・オンタイプの多心光コネクタの例を示
すもので、（１）は内部の軸方向両側に光コネクタプラ
グ（２）の保持用ツメ（３）を宵するアダプタケースで
、第２図に示すように、上記アダプタケース０）の両側
から挿入された光コネクタプラグ（２）は上記保持用ツ
メ（３）にて把持され、ガイドピン（））によって位置
決め結合される。（４）は光コネクタプラグ（２）の挿
入方向に直交してアダプタケース０）内に設けた結合薄
膜で、上記挿入された光コネクタプラグ（２）はこの結
合薄膜（４）を介して結合される。この結合薄膜（４）
は光透過性でかつガラスよりも高い屈折率の材料で形成
されている。（５）は上記結合薄膜（４）の交換を容易
にするために、アダプタケース０）上面に設けた結合薄
膜交換口である。The drawing shows an example of a bush-on type multi-core optical connector, in which (1) is an adapter case with claws (3) for holding the optical connector plug (2) on both sides in the axial direction; As shown in the figure, the optical connector plugs (2) inserted from both sides of the adapter case 0) are held by the holding claws (3) and are positioned and connected by the guide pins ()). (4) is a coupling thin film provided inside the adapter case 0) perpendicular to the insertion direction of the optical connector plug (2), and the inserted optical connector plug (2) is coupled via this coupling thin film (4). be done. This bonded thin film (4)
is made of a material that is transparent and has a higher refractive index than glass. (5) is a coupling thin film exchange port provided on the top surface of the adapter case 0) to facilitate replacement of the coupling thin film (4).
なお、図面において、（８）は光コネクタプラグ（２）
内に位置決めされた複数本の光ファイバである。In addition, in the drawing, (8) is the optical connector plug (2)
A plurality of optical fibers are positioned within the
第３図〜第５図は結合薄膜の各種例を示すものである。3 to 5 show various examples of bonding thin films.
第３図に）は結合薄膜（４）が周囲の高強度Ｍ （１１
）と中央部の低強度膜（４２）から構成されている例で
、同図（ロ）に示すように、光コネクタプラグ（２）が
片側のみアダプタケース（＋）内に挿入された状態では
、周囲に位置する高強度膜（４Ｉ）が大きく変形し、中
央部の低強度膜（４２）にかかる負担を軽減す−る。こ
の低強度ｆｉ （４２）は屈折率がガラス（ＳｉＯ２等
）よりも高く、かつ光透過性にすぐれており、光コネク
タプラグ（２）の端面間での反射を防止する。なお、（
４３）はガイドピン（７）（第２図参照）用の貫通穴で
ある。3), the bonding thin film (4) is surrounded by a high strength M (11
) and a low-strength membrane (42) in the center.As shown in the same figure (b), when the optical connector plug (2) is inserted into the adapter case (+) only on one side, , the high-strength membrane (4I) located at the periphery is greatly deformed, and the load on the low-strength membrane (42) in the center is reduced. This low-strength fi (42) has a refractive index higher than that of glass (SiO2, etc.) and has excellent light transmittance, and prevents reflection between the end faces of the optical connector plug (2). In addition,(
43) is a through hole for the guide pin (7) (see Figure 2).
ム
第４図は結合薄膜（４）他の例の説明図で、同図（イ）
は正面図、同図（Ｔ４は側面図である。図面に示すよう
に、周囲部分（４４）が厚く、中央部分（４５）が薄く
構成されており、周囲部分（４４）にはガイドピン用の
貫通穴（４３）があり、中央部分（４５）の光ファイバ
が位置する部分には例えば１０〜２．００μｍ程度の微
小穴（４Ｂ）を有しており、この微小穴（４６）にはあ
らかじめグリス、オイル等を充填して薄膜を形成してお
く。Figure 4 is an explanatory diagram of another example of the bonded thin film (4), and the figure (a)
is a front view, and the figure (T4 is a side view).As shown in the drawing, the peripheral part (44) is thick and the central part (45) is thin, and the peripheral part (44) has a guide pin. The central portion (45), where the optical fiber is located, has a microhole (4B) of, for example, about 10 to 2.00 μm, and this microhole (46) has a through hole (43). Fill it with grease, oil, etc. in advance to form a thin film.
第５図（イ）は結合薄膜（４）のさらに他の例の説明図
で、結合薄膜（４）の周囲に保持枠（４７）を設け、こ
の保持枠（４））にはガイドツメ部（４８）を具えてい
る。しかして、同図（ロ）に示すように上記ガイドツメ
Ｒ（４８）がアダプタケース（り内に設けられたガイド
レール上を摺動するように構成されており、光コネクタ
１ヤ
プラグ（２）が第３図（りのように舟側のみから挿入さ
れている状態においては、結合薄膜（４）が軸方向に摺
動し、結合薄膜（４）にかかる衝撃を吸収し、負担を軽
減するものである。FIG. 5(a) is an explanatory view of still another example of the bonding thin film (4), in which a holding frame (47) is provided around the bonding thin film (4), and this holding frame (4) has a guide claw portion ( 48). As shown in Figure (b), the guide claw R (48) is configured to slide on a guide rail provided inside the adapter case, and the optical connector 1 and the plug (2) are When inserted only from the boat side as shown in Figure 3, the coupling thin film (4) slides in the axial direction, absorbing the impact on the coupling thin film (4) and reducing the burden. It is.
（実施例）
ガイドピン結合方式のブツシュ・オンタイプの多心コネ
クタを試作し、３Ｍファイバについて実験を行なった。(Example) A bush-on type multi-core connector using a guide pin coupling method was prototyped, and experiments were conducted on 3M fiber.
結合薄膜は第４図に示すタイプのものを用い、膜は厚さ
５０μｍのポリエステルフィルムを使用し、中央部の光
コネクタプラグ周辺部は厚さＩＯｔｔｍまで薄膜化する
特殊加工を施し、この部分に、径１５μｍφの微小穴を
、光コネクタプラグの光ファイパ位置に合せて形成し、
ここにマツチング用グリスを付着させ、アダプタケース
内に組込んだ。The bonding thin film used is of the type shown in Figure 4. The film is a polyester film with a thickness of 50 μm, and the area around the optical connector plug in the center is specially processed to be thinned to a thickness of IOttm. , a microhole with a diameter of 15 μmφ is formed to match the optical fiber position of the optical connector plug,
Matching grease was applied to this and it was assembled into the adapter case.
接続損失は平均０．２５ｄＢで、通常のマツチンググリ
ス付着方式と同等であり、温度特性試験（−３０〜＋６
０℃、３日間）、混熱試験（Ｇｏで、９５％）も最大変
化量が±０．１ｄＢ以下と良好な結果が得られた。The average connection loss is 0.25 dB, which is equivalent to the normal mating grease attachment method, and the temperature characteristic test (-30 to +6
0° C. for 3 days) and mixed heat test (Go, 95%) also yielded good results with a maximum change of ±0.1 dB or less.
繰り返し脱芒における損失の変化ｎは第６図に示す通り
であり、ｎ＝５０までは±０．ＩｄＢ以内と全く問題な
いが、ｎ＝ＩＧＯを超えると損失の増加が見られるよう
になる。The change in loss n during repeated awning is as shown in Figure 6, and is ±0. There is no problem if it is within IdB, but if n=IGO is exceeded, an increase in loss will be seen.
又着脱する光コネクタプラグの端面を、毎回きれいに清
掃して実験した結果を第７図に示す。ｎ＝２０までは全
く問題はないが、ｎ＝５０以上では損失の増加が見られ
る。FIG. 7 shows the results of an experiment in which the end face of the optical connector plug was thoroughly cleaned each time it was attached or detached. There is no problem at all up to n=20, but an increase in loss is seen when n=50 or more.
（発明の効果）
以上説明したように、本発明の光コネクタによれば、ア
ダプタ内に結合薄膜を設けることにより、従来のように
着脱の都度接合端面にマツチング材を付着させたり、あ
るいは接合端面を凸球面状に特殊加工する等の必要がな
くなり、取扱い性のすぐれた加工容易な光フネクタを実
現することが出来る。(Effects of the Invention) As explained above, according to the optical connector of the present invention, by providing a coupling thin film inside the adapter, it is possible to attach a matching material to the mating end surface each time the adapter is attached or detached, or There is no need for special processing of the material into a convex spherical shape, and it is possible to realize an optical funector that is easy to process and has excellent handling properties.
又アダプタ内に設ける結合薄膜の光透過部分に、適度な
光吸収材やフィルターを設けることにより、簡便な光減
衰路を実現することも可能である。Furthermore, by providing an appropriate light absorbing material or filter in the light transmitting portion of the coupling thin film provided within the adapter, it is also possible to realize a simple light attenuation path.
このように、従来は単に光コネクタ結合部品であったア
ダプタに各種機能を付加することの出来る本発明の光コ
ネクタは今後の光通信時代に大きく寄与するものである
。In this way, the optical connector of the present invention, which can add various functions to adapters that were conventionally simply optical connector coupling parts, will greatly contribute to the future era of optical communications.
第１図は本発明の光コネクタにおけるアダプタの外観図
で、第２図は光コネクタプラグを挿入した状態の第１図
の上面に平行な面における断面図である。第３図は本発
明における結合薄膜の一例の説明図で、同図（イ）は正
面図、同図（りは使用状態の説明図である。
第４図は結合薄膜の他の例の説明図で、同図（イ）は正
面図、同図（→は側面図である。
第５図は結合薄膜のさらに他の例の説明図で、同図（イ
）は正面図、同図（→はアダプタケースに組込んだ状態
の説明図である。
第６図及び第７図は本発明の光コネクタの繰り返し着脱
における着脱回数と損失の変化量の関係図である。
ｌ・・・アダプタケース、２・・・光コネクタプラグ、
３・・・プラグ保持用ツメ、４・・・結合薄膜、４ト・
・高強度膜、４２・・・低強度膜、４３・・・ガイドピ
ン用貫通穴、４Ｂ・・・微小穴、４８・・・ガイドツメ
部、５・・・結合薄膜交換口、６・・・光ファイバ、７
・・・ガイドビン。
算 １ 閾
寡３ 図
算４図
沸５目
算６回
着 月見 ｒｉ：Ｊ 枚
着脱回牧FIG. 1 is an external view of an adapter in the optical connector of the present invention, and FIG. 2 is a sectional view taken in a plane parallel to the top surface of FIG. 1 with an optical connector plug inserted. FIG. 3 is an explanatory view of an example of the bonding thin film according to the present invention, and FIG. 3A is a front view, and FIG. In the figure, the same figure (A) is a front view, the same figure (→ is a side view). → is an explanatory diagram of a state assembled in an adapter case. FIGS. 6 and 7 are diagrams showing the relationship between the number of times of attachment and detachment and the amount of change in loss in repeated attachment and detachment of the optical connector of the present invention. l...Adapter Case, 2... optical connector plug,
3... Plug holding claw, 4... Bonding thin film, 4...
-High strength membrane, 42...Low strength membrane, 43...Guide pin through hole, 4B...Minute hole, 48...Guide claw portion, 5...Coupling thin film exchange port, 6... optical fiber, 7
...Guide bin. Arithmetic 1 Threshold 3 Illustrated calculation 4 Illustrated 5 Moku calculation 6th Tsukimi ri:J Piece attachment/detachment
Claims (4)
することにより光ファイバの接続を実現する光コネクタ
において、上記光コネクタアダプタ内に光コネクタプラ
グの挿入方向と直交して光透過性で、かつガラスより高
屈折率の結合薄膜を設けたことを特徴とする光コネクタ
。(1) In an optical connector that realizes the connection of optical fibers by inserting an optical connector plug into an optical connector adapter, the optical connector adapter is made of a glass material that is optically transparent and perpendicular to the insertion direction of the optical connector plug. An optical connector characterized by having a coupling thin film with a higher refractive index.
イバの位置する部分に微小穴を具え、この微小穴の内部
に光透過性の物質を有することを特徴とする特許請求の
範囲第１項記載の光コネクタ。(2) Claim 1, characterized in that the coupling thin film has a microhole in the portion where the optical fiber of the optical connector plug to be inserted is located, and has a light-transmitting substance inside the microhole. Optical connector listed.
軸方向にスライド可能であることを特徴とする特許請求
の範囲第１項記載の光コネクタ。(3) The optical connector according to claim 1, wherein the coupling thin film is slidable in the axial direction within the optical connector adapter.
請求の範囲第１項記載の光コネクタ。(4) The optical connector according to claim 1, wherein the coupling thin film is replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63002801A JP2620276B2 (en) | 1988-01-08 | 1988-01-08 | Optical connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63002801A JP2620276B2 (en) | 1988-01-08 | 1988-01-08 | Optical connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01179106A true JPH01179106A (en) | 1989-07-17 |
| JP2620276B2 JP2620276B2 (en) | 1997-06-11 |
Family
ID=11539478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63002801A Expired - Fee Related JP2620276B2 (en) | 1988-01-08 | 1988-01-08 | Optical connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2620276B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09145956A (en) * | 1995-11-16 | 1997-06-06 | Fujikura Ltd | Easy-to-connect optical connector |
| JP2004226438A (en) * | 2003-01-20 | 2004-08-12 | Tomoegawa Paper Co Ltd | Connection structure and optical connecting method for optical transmission component |
| WO2005022226A1 (en) * | 2003-08-28 | 2005-03-10 | Asahi Glass Company, Limited | Method of treating end face of plastic optical fiber |
| WO2005050273A1 (en) * | 2003-11-19 | 2005-06-02 | Tomoegawa Paper Co., Ltd. | Optical connection structure and optical connection method |
| JP2005148580A (en) * | 2003-11-19 | 2005-06-09 | Tomoegawa Paper Co Ltd | Optical connecting structure and optical connecting method |
| JP2006221031A (en) * | 2005-02-14 | 2006-08-24 | Tomoegawa Paper Co Ltd | Optical connection structure |
| CN100456067C (en) * | 2003-11-19 | 2009-01-28 | 株式会社巴川制纸所 | Optical connection structure and optical connection method |
| JP2014149523A (en) * | 2013-02-01 | 2014-08-21 | Avago Technologies General Ip (Singapore) Private Ltd | Adaptor and method for cleaning optical junction part and reducing optical rear reflection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54169476U (en) * | 1978-05-19 | 1979-11-30 | ||
| JPS6163391A (en) * | 1984-08-20 | 1986-04-01 | フイアツト・アウト・ソシエタ・ペル・アチオーニ | Method of treating metallic material by laser beam |
-
1988
- 1988-01-08 JP JP63002801A patent/JP2620276B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54169476U (en) * | 1978-05-19 | 1979-11-30 | ||
| JPS6163391A (en) * | 1984-08-20 | 1986-04-01 | フイアツト・アウト・ソシエタ・ペル・アチオーニ | Method of treating metallic material by laser beam |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09145956A (en) * | 1995-11-16 | 1997-06-06 | Fujikura Ltd | Easy-to-connect optical connector |
| JP2004226438A (en) * | 2003-01-20 | 2004-08-12 | Tomoegawa Paper Co Ltd | Connection structure and optical connecting method for optical transmission component |
| WO2005022226A1 (en) * | 2003-08-28 | 2005-03-10 | Asahi Glass Company, Limited | Method of treating end face of plastic optical fiber |
| WO2005050273A1 (en) * | 2003-11-19 | 2005-06-02 | Tomoegawa Paper Co., Ltd. | Optical connection structure and optical connection method |
| JP2005148580A (en) * | 2003-11-19 | 2005-06-09 | Tomoegawa Paper Co Ltd | Optical connecting structure and optical connecting method |
| US7422375B2 (en) | 2003-11-19 | 2008-09-09 | Tomoegawa Paper Co., Ltd. | Optical connection structure and optical connection method |
| CN100456067C (en) * | 2003-11-19 | 2009-01-28 | 株式会社巴川制纸所 | Optical connection structure and optical connection method |
| EP2400326A1 (en) * | 2003-11-19 | 2011-12-28 | Tomoegawa Paper Co., Ltd. | Optical connection structure and optical connection method |
| JP2006221031A (en) * | 2005-02-14 | 2006-08-24 | Tomoegawa Paper Co Ltd | Optical connection structure |
| JP2014149523A (en) * | 2013-02-01 | 2014-08-21 | Avago Technologies General Ip (Singapore) Private Ltd | Adaptor and method for cleaning optical junction part and reducing optical rear reflection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2620276B2 (en) | 1997-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |