JPH01130106A - Optical attenuator and production thereof - Google Patents
Optical attenuator and production thereofInfo
- Publication number
- JPH01130106A JPH01130106A JP62288533A JP28853387A JPH01130106A JP H01130106 A JPH01130106 A JP H01130106A JP 62288533 A JP62288533 A JP 62288533A JP 28853387 A JP28853387 A JP 28853387A JP H01130106 A JPH01130106 A JP H01130106A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- pigment
- optical fiber
- dye
- core
- 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 31
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000013307 optical fiber Substances 0.000 claims abstract description 16
- 239000000049 pigment Substances 0.000 claims abstract description 15
- 238000005253 cladding Methods 0.000 claims description 7
- 239000008358 core component Substances 0.000 claims description 4
- 238000002074 melt spinning Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims 3
- 229920005989 resin Polymers 0.000 claims 3
- 239000000975 dye Substances 0.000 abstract description 8
- 238000009987 spinning Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000006229 carbon black Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TYCFGHUTYSLISP-UHFFFAOYSA-N 2-fluoroprop-2-enoic acid Chemical compound OC(=O)C(F)=C TYCFGHUTYSLISP-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- -1 perfluoroalkyl methacrylate Chemical compound 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
Landscapes
- 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〕
本発明は光伝送路の九量調整、光伝送特性の測定、試験
に用いうる小型、軽量の光減衰器とその製造方法に関す
るものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a small and lightweight optical attenuator that can be used for adjusting the optical transmission line, measuring and testing optical transmission characteristics, and a method for manufacturing the same. .
〔従来の技術〕 ・
従来光減衰器として開発されてき念ものとしては第２図
に示すように中心軸上に元ファイバ１、ピをそれぞれ有
する光コネクタプラグの７エルール７．７′を対向させ
、その間に光軸調整用レンズ６− 、６’や減光素子２
を挿入したものや特開昭５９−９４７０２号公報に示さ
れる如き、第３図に示すようなスリーブ５の中央部に元
ファイバ１が中心軸上に挿入された円筒部材８とその端
面に設けた傾斜面に金属等減衰膜を蒸着したものがある
。更に他の型の光減衰器としては特開昭５５−７９４０
２号公報に示される如き、第４図に示すような元ファイ
バの一方の鏡面を有する端面に金属等の蒸着膜を形成し
、もう一方の光ファイバ端面を融着接続したものがある
。[Prior art] - As shown in Fig. 2, a conventional optical attenuator has been developed in which the errules 7 and 7' of an optical connector plug having the original fiber 1 and pin, respectively, are opposed to each other, as shown in Fig. 2. , between which the optical axis adjustment lenses 6-, 6' and the light attenuation element 2 are connected.
As shown in Japanese Unexamined Patent Publication No. 59-94702, a cylindrical member 8 in which the original fiber 1 is inserted on the central axis in the center of the sleeve 5 as shown in FIG. Some types have a damping film, such as a metal, deposited on the inclined surface. Furthermore, another type of optical attenuator is disclosed in Japanese Patent Application Laid-Open No. 55-7940.
As shown in Japanese Patent No. 2, there is an optical fiber in which a vapor-deposited film of metal or the like is formed on one end face having a mirror surface of an original fiber as shown in FIG. 4, and the other end face of the optical fiber is fusion-spliced.
しかしながらこれらの減衰器は高度の技能と熟練、大規
模な装置を要し、作業性及び量産性の向上を阻害してい
た。However, these attenuators require a high degree of skill and skill and large-scale equipment, which hinders improvements in workability and mass productivity.
本発明では上記の高度の技能と熟練、大規模な装置を要
せず作業性及び量産性を向上した小型、低価格の光減衰
器を実男したものである。The present invention is a compact, low-cost optical attenuator that does not require the above-mentioned high level of skill and skill, does not require large-scale equipment, and has improved workability and mass productivity.
本発明は元ファイバ内に光軸方向に対し垂直な部分に減
衰又は波長選択性層を設けた光減衰器とその製造方法で
ある。The present invention is an optical attenuator in which an attenuation or wavelength selective layer is provided in a portion perpendicular to the optical axis direction within the original fiber, and a method for manufacturing the same.
本発明の光減衰又は波長選択性層は元ファイバ内で染料
又は顔料が溶融又は分散されていることを特徴としてい
る。The light-attenuating or wavelength-selective layer of the present invention is characterized by dyes or pigments being melted or dispersed within the original fiber.
本発明の光減衰器の製造方法は元ファイバ紡糸工程中に
光ファイバ内のコア部又はコア部とクラッド部に染料又
は顔料を溶融又は分散させて複合紡糸し光減衰又は波長
選択性層となる部分全形成することである。The manufacturing method of the optical attenuator of the present invention involves melting or dispersing dye or pigment in the core part or the core part and cladding part in the optical fiber during the original fiber spinning process, and then composite spinning to form a light attenuating or wavelength selective layer. Partial and total formation.
第１図（ａｌはコアークラッド構造を有する元ファイバ
のコア部に光減衰又は波長選択性層となる部分を形成す
るための溶融紡糸頭の構造の一例を示すものである。コ
ア部に光減衰層を設けるには紡糸前の過ｑでコア成分に
染料又は顔料を溶融又は分散させておく。又光ファイバ
のコア及びクラッド部の全体を光減衰又は波長選択性部
とする場合はコア成分と同じ様にクラッド成分へ光減衰
材料を導入させておき、第１図の紡糸頭の先端に取り付
けられた紡糸口金を通してコア成分及σクラッド成分の
各溶融物を押しだすことにより連続して光ファイバ形状
の光減衰性又は波長選択性を有するものができる。Figure 1 (al) shows an example of the structure of a melt-spinning head for forming an optically attenuating or wavelength selective layer in the core of an original fiber having a core-clad structure. To provide a layer, a dye or pigment is melted or dispersed in the core component using overq before spinning.Also, when the entire core and cladding portion of the optical fiber is used as an optical attenuation or wavelength selective portion, the core component and the pigment are melted or dispersed. In the same way, an optical attenuation material is introduced into the cladding component, and the melts of the core component and σ cladding component are extruded through the spinneret attached to the tip of the spinning head shown in Fig. 1 to continuously form optical fibers. It is possible to have optical attenuation or wavelength selectivity in the shape.
第１図（ｂｌは本発明による光減衰性又は波長選択性の
装置の断面図である。FIG. 1 (bl) is a cross-sectional view of a light-attenuating or wavelength-selective device according to the invention.
波長選択性又は光減衰性の染顔料としては耐熱性を備え
た染顔料ならばいずれのものをも用いることができるが
、光減衰性顔料としては微粒子状のカーボンブラックが
好しい。As the wavelength-selective or light-attenuating dye and pigment, any heat-resistant dye and pigment can be used, but as the light-attenuating pigment, fine particulate carbon black is preferable.
本発明の波長選択性又は光減衰性光ファイバはプラスチ
ック製のコアクラッド型光ファイバであることが好しく
、コア材としてはポリメチルメタクリレート、ポリスチ
レン、ポリカーボネート、ポリ−４−メチルペンテン−
１、ポリグルタルイミドなどを用い、クラツド材として
はコア材の屈折率よりも０．０３以上小さな屈折率を有
するポリマー、とくに弗素系ポリマー、例えば弗化ビニ
リデン／テトラフルオロエチレンコポリマー、パーフル
オロアルキルメタクリレート系ポリマー、α−フルオロ
アクリレート系ポリマーなどを用いることができる。The wavelength selective or light attenuating optical fiber of the present invention is preferably a core-clad optical fiber made of plastic, and the core material is polymethyl methacrylate, polystyrene, polycarbonate, poly-4-methylpentene-
1. Using polyglutarimide or the like, the cladding material is a polymer having a refractive index 0.03 or more smaller than the refractive index of the core material, especially a fluorine-based polymer, such as vinylidene fluoride/tetrafluoroethylene copolymer, perfluoroalkyl methacrylate. type polymer, α-fluoroacrylate type polymer, etc. can be used.
以下実施例により本発明を更に詳細に説明する。The present invention will be explained in more detail with reference to Examples below.
本発明に用いた減衰材料として０．１μｍ以下のカーボ
ンブランクコア材料としてポリメタクリル酸メチル、ク
ラッド材料としてフッ化ビニリデン／テトラフルオロエ
チレンコポリマーを用いた。減衰層成分のカーボンブラ
ンクは前も′つてコア材料であるポリメタクリル酸メチ
ルに均一に分散させておく。減衰材料とコア材料の混合
重量比がカーボンブランク１に対しポリメタクリル酸メ
チル＋００００の割合として複合紡糸して作られたコア
ークランド型の光ファイバ形状の光減衰器は長さ１ｃｒ
ｎ当たり、減衰層を有しない光ファイバの同じ長さのも
のと比較して約５０ ｄＢ の減衰を示した。As damping materials used in the present invention, polymethyl methacrylate was used as a carbon blank core material of 0.1 μm or less, and vinylidene fluoride/tetrafluoroethylene copolymer was used as a cladding material. The carbon blank, which is a component of the damping layer, is previously uniformly dispersed in polymethyl methacrylate, which is a core material. An optical attenuator in the form of a core-cland type optical fiber made by composite spinning with a mixing weight ratio of attenuation material and core material of carbon blank 1 to polymethyl methacrylate + 0000 has a length of 1 cr.
per n, exhibited an attenuation of approximately 50 dB compared to the same length of optical fiber without an attenuation layer.
〔発明の効果〕 ゛
以上説明した様に本発明の波長選択性又は光減衰を備え
た装置は元ファイバ製造の際、コア部に波長選択層又は
光減衰層を設けることを利用したもので安定した波長選
択性減衰性ｔＷし、小型軽量で光ファイバ形状の装置ｔ
ｔ−得ることができる。[Effects of the Invention] ゛As explained above, the device with wavelength selectivity or optical attenuation of the present invention utilizes the provision of a wavelength selection layer or an optical attenuation layer in the core portion during the production of the original fiber, and is stable. A small, lightweight, optical fiber-shaped device with wavelength-selective attenuation
t- can be obtained.
本発明の装置は元ファイバネットワークシステムや光学
機器内において受信側の所要レベルに合わせて減衰させ
たい場合に有用なものである。The device of the present invention is useful when it is desired to attenuate in accordance with the required level on the receiving side in an original fiber network system or optical equipment.
第１Ｎは本発明の実施例に係る光減衰器とその製造方法
を示す断面図である。
第２図、第３図及び第４図は従来の光減衰器の−例を示
す断面図である。
１，１′ 光ファイバ
２ 光減衰層
３ コア
４ クラッド
５ スリーブ
６．６′ レンズ
７７′ フェルール
８ 円筒部材
９ 電極
特許出願人 三菱レイヨン株式会社1N is a sectional view showing an optical attenuator and a method of manufacturing the same according to an embodiment of the present invention. FIGS. 2, 3, and 4 are cross-sectional views showing examples of conventional optical attenuators. 1,1' Optical fiber 2 Optical attenuation layer 3 Core 4 Clad 5 Sleeve 6.6' Lens 77' Ferrule 8 Cylindrical member 9 Electrode patent applicant Mitsubishi Rayon Co., Ltd.
Claims (1)
層を設けたことを特徴とする光減衰器。 ２、前記染顔料が前記光ファイバ中に溶解又は分散され
光減衰又は波長選択性層を形成していることを特徴とす
る特許請求範囲第一項の光減衰器。 ３、光吸収性顔料又は染料を含む光透過性樹脂をコア成
分とし、コアを構成する樹脂の屈折率よりも低い屈折率
を有する透明性樹脂を必要により該染料又は顔料を分散
せしめたものをクラッド部とし溶融紡糸法にて光減衰特
性を有するコア−クラッド型光ファイバとすることを特
徴とする光減衰器の製造方法。[Scope of Claims] 1. An optical attenuator characterized in that an optical attenuating or wavelength selective layer containing dye and pigment is provided within an optical fiber. 2. The optical attenuator according to claim 1, wherein the dye and pigment are dissolved or dispersed in the optical fiber to form a light attenuating or wavelength selective layer. 3. The core component is a light-transmitting resin containing a light-absorbing pigment or dye, and if necessary, the dye or pigment is dispersed in a transparent resin having a refractive index lower than that of the resin constituting the core. 1. A method of manufacturing an optical attenuator, characterized in that the cladding portion is formed into a core-clad optical fiber having optical attenuation characteristics by melt spinning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62288533A JPH01130106A (en) | 1987-11-17 | 1987-11-17 | Optical attenuator and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62288533A JPH01130106A (en) | 1987-11-17 | 1987-11-17 | Optical attenuator and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01130106A true JPH01130106A (en) | 1989-05-23 |
Family
ID=17731471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62288533A Pending JPH01130106A (en) | 1987-11-17 | 1987-11-17 | Optical attenuator and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01130106A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6490391B1 (en) | 2000-07-12 | 2002-12-03 | Oluma, Inc. | Devices based on fibers engaged to substrates with grooves |
| US6501875B2 (en) | 2000-06-27 | 2002-12-31 | Oluma, Inc. | Mach-Zehnder inteferometers and applications based on evanescent coupling through side-polished fiber coupling ports |
| US6516114B2 (en) | 2000-06-27 | 2003-02-04 | Oluma, Inc. | Integration of fibers on substrates fabricated with grooves |
| US6542663B1 (en) | 2000-09-07 | 2003-04-01 | Oluma, Inc. | Coupling control in side-polished fiber devices |
| US6571035B1 (en) | 2000-08-10 | 2003-05-27 | Oluma, Inc. | Fiber optical switches based on optical evanescent coupling between two fibers |
| US6597833B1 (en) | 2000-06-27 | 2003-07-22 | Oluma, Inc. | Wavelength-division multiplexers and demultiplexers based on mach-zehnder interferometers and evanescent coupling |
| US6621952B1 (en) | 2000-08-10 | 2003-09-16 | Oluma, Inc. | In-fiber variable optical attenuators and modulators using index-changing liquid media |
| US6621951B1 (en) | 2000-06-27 | 2003-09-16 | Oluma, Inc. | Thin film structures in devices with a fiber on a substrate |
| US6625349B2 (en) | 2000-06-27 | 2003-09-23 | Oluma, Inc. | Evanescent optical coupling between a waveguide formed on a substrate and a side-polished fiber |
-
1987
- 1987-11-17 JP JP62288533A patent/JPH01130106A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6501875B2 (en) | 2000-06-27 | 2002-12-31 | Oluma, Inc. | Mach-Zehnder inteferometers and applications based on evanescent coupling through side-polished fiber coupling ports |
| US6516114B2 (en) | 2000-06-27 | 2003-02-04 | Oluma, Inc. | Integration of fibers on substrates fabricated with grooves |
| US6556746B1 (en) | 2000-06-27 | 2003-04-29 | Oluma, Inc. | Integrated fiber devices based on Mach-Zehnder interferometers and evanescent optical coupling |
| US6597833B1 (en) | 2000-06-27 | 2003-07-22 | Oluma, Inc. | Wavelength-division multiplexers and demultiplexers based on mach-zehnder interferometers and evanescent coupling |
| US6621951B1 (en) | 2000-06-27 | 2003-09-16 | Oluma, Inc. | Thin film structures in devices with a fiber on a substrate |
| US6625349B2 (en) | 2000-06-27 | 2003-09-23 | Oluma, Inc. | Evanescent optical coupling between a waveguide formed on a substrate and a side-polished fiber |
| US6490391B1 (en) | 2000-07-12 | 2002-12-03 | Oluma, Inc. | Devices based on fibers engaged to substrates with grooves |
| US6690857B2 (en) | 2000-07-12 | 2004-02-10 | Oluma, Inc. | Fiber devices having side evanescent coupling port |
| US6571035B1 (en) | 2000-08-10 | 2003-05-27 | Oluma, Inc. | Fiber optical switches based on optical evanescent coupling between two fibers |
| US6621952B1 (en) | 2000-08-10 | 2003-09-16 | Oluma, Inc. | In-fiber variable optical attenuators and modulators using index-changing liquid media |
| US6542663B1 (en) | 2000-09-07 | 2003-04-01 | Oluma, Inc. | Coupling control in side-polished fiber devices |
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