JPS63188121A - Plastic optical fiber and its production - Google Patents
Plastic optical fiber and its productionInfo
- Publication number
- JPS63188121A JPS63188121A JP62019949A JP1994987A JPS63188121A JP S63188121 A JPS63188121 A JP S63188121A JP 62019949 A JP62019949 A JP 62019949A JP 1994987 A JP1994987 A JP 1994987A JP S63188121 A JPS63188121 A JP S63188121A
- Authority
- JP
- Japan
- Prior art keywords
- core
- plastic
- optical fiber
- base material
- dye
- 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
- 239000013308 plastic optical fiber Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 42
- 229920003023 plastic Polymers 0.000 claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 34
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 19
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 19
- 239000000975 dye Substances 0.000 claims description 32
- 238000005253 cladding Methods 0.000 claims description 14
- 239000000049 pigment Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 4
- 239000001018 xanthene dye Substances 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical compound N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 claims 1
- CFNMUZCFSDMZPQ-GHXNOFRVSA-N 7-[(z)-3-methyl-4-(4-methyl-5-oxo-2h-furan-2-yl)but-2-enoxy]chromen-2-one Chemical compound C=1C=C2C=CC(=O)OC2=CC=1OC/C=C(/C)CC1OC(=O)C(C)=C1 CFNMUZCFSDMZPQ-GHXNOFRVSA-N 0.000 claims 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims 1
- 150000004775 coumarins Chemical class 0.000 claims 1
- 229920002935 deuterated poly(methyl methacrylates) Polymers 0.000 claims 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 claims 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 claims 1
- 230000010355 oscillation Effects 0.000 abstract description 18
- 229920001577 copolymer Polymers 0.000 abstract description 7
- 101000946124 Homo sapiens Lipocalin-1 Proteins 0.000 abstract 1
- 102100034724 Lipocalin-1 Human genes 0.000 abstract 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- VYXSBFYARXAAKO-WTKGSRSZSA-N chembl402140 Chemical compound Cl.C1=2C=C(C)C(NCC)=CC=2OC2=C\C(=N/CC)C(C)=CC2=C1C1=CC=CC=C1C(=O)OCC VYXSBFYARXAAKO-WTKGSRSZSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005424 photoluminescence Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 150000001893 coumarin derivatives Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Lasers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はレーザ発振機能を有するプラスチック光ファイ
バに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a plastic optical fiber having a laser oscillation function.
（従来の技術）
従来、レーザ、光スィッチ、光変調器などの光機能素子
用として、フォトルミネッセンスや非線形光学定数が大
きい材料の検討がなされていたが、最近の低損失光ファ
イバの開発は、この材料選択に新たな可能性をもたらし
た。すなわち、光ファイバの低損失性と光閉じ込め効果
は、光と媒質との相互作用距離を長くし、材料自身の特
性は小さくても大きな機能が得られるようになった。こ
れまでに、希土類元素を添加した石英光ファイバのフォ
トルミネッセンスを利用したレーザ、光増幅器、温度セ
ンサや、ＧｅＯ２添加石英光ファイバやフッ化物光ファ
イバの誘導ラマン散乱を利用したレーザ、光増幅器など
が検討されている。(Prior art) Materials with large photoluminescence and nonlinear optical constants have been studied for use in optical functional devices such as lasers, optical switches, and optical modulators, but the recent development of low-loss optical fibers This brings new possibilities to material selection. In other words, the low loss property and optical confinement effect of optical fibers lengthen the interaction distance between light and the medium, making it possible to obtain large functions even if the characteristics of the material itself are small. So far, we have developed lasers, optical amplifiers, and temperature sensors that utilize photoluminescence in quartz optical fibers doped with rare earth elements, and lasers and optical amplifiers that utilize stimulated Raman scattering in GeO2-doped silica optical fibers and fluoride optical fibers. It is being considered.
（発明が解決しようとする問題点）
しかし、前記希土類元素添加石英光ファイバによるレー
ザは発振波長域が限られており、また、誘導ラマン散乱
を利用したレーザは効率が低いためＹＡＧレーザなどの
大出力励起光源が不可欠であるという問題点があった。(Problems to be Solved by the Invention) However, the laser using the rare earth element-doped quartz optical fiber has a limited oscillation wavelength range, and the laser using stimulated Raman scattering has low efficiency, so The problem was that an output excitation light source was essential.
本発明の目的は前記問題点に鑑み、可視から近赤外の連
続波長域で高効率なレーザ発振が可能であるプラスチッ
ク光ファイバを提供することにある。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a plastic optical fiber capable of highly efficient laser oscillation in a continuous wavelength range from visible to near infrared.
（問題点を解決するための手段）
前記目的を達成するために、第１の発明では、光透過性
に優れたプラスチック製コアを、該コアより屈折率の低
いプラスチック製クラッドで被覆したプラスチック光フ
ァイバにおいて、前記コアに色素を含有させたことを特
徴とし、
第２の発明では、色素を溶解した溶液中にコア用プラス
チック母材を所定温度で、所定時間浸漬することにより
、該コア用プラスチック母材に前記色素を含有させた後
、所定温度で所定時間、該コア用プラスチック母材を乾
燥させる第１の工程と、該コア用プラスチック母材をク
ラッド用プラスチック母材の中央に設けた穴に充填して
なるプラスチック光ファイバ母材を、所定温度、所定速
度で加熱紡糸する第２の工程とを有することを特徴とし
、
第３の発明ではコア用プラスチックのモノマーに色素を
溶解し、媒体を用いて所定温度、所定時間で重合させる
ことにより色素を含有するコア用プラスチック母材を作
成する第１の工程と、コア用プラスチック母材をクラッ
ド用プラスチック母材の中央に設けた穴に充填してなる
プラスチック光ファイバ母材を、所定温度、所定速度で
加熱紡糸する第２の工程とを有することを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the first invention provides a plastic optical system in which a plastic core with excellent light transmittance is covered with a plastic cladding having a lower refractive index than the core. The fiber is characterized in that the core contains a dye, and in the second invention, the core plastic base material is immersed in a solution containing the dye at a predetermined temperature for a predetermined time. A first step of drying the core plastic base material for a predetermined time at a predetermined temperature after the base material contains the pigment, and a hole provided in the center of the cladding plastic base material. and a second step of heating and spinning a plastic optical fiber base material filled with a plastic optical fiber at a predetermined temperature and a predetermined speed. The first step is to create a core plastic base material containing pigment by polymerizing it at a predetermined temperature and time using The present invention is characterized by comprising a second step of heating and spinning a plastic optical fiber preform made of the above at a predetermined temperature and a predetermined speed.
（作用）
上記第１の発明によれば、プラスチック光ファイバの軸
方向にコア内を透過してきた光は、プラスチック光ファ
イバの光閉じ込め効果のため前記コア中に含有される色
素により発振する。(Function) According to the first invention, the light that has passed through the core in the axial direction of the plastic optical fiber is oscillated by the dye contained in the core due to the light confinement effect of the plastic optical fiber.
第２の発明によれば、色素が溶解した溶液中にコア用プ
ラスチック母材を所定温度で所定時間浸漬することでコ
ア用プラスチック母材に色素を添加することができ、さ
らに該コア用プラスチック母材をクラッド用プラスチッ
ク母材の中央に設けた穴に充填して加熱し線引きするこ
とで、色素を含有したプラスチック光ファイバを製造で
きる。According to the second invention, the pigment can be added to the plastic matrix for the core by immersing the plastic matrix for the core in a solution in which the pigment is dissolved at a predetermined temperature for a predetermined period of time, and A dye-containing plastic optical fiber can be produced by filling the material into a hole in the center of a plastic cladding material, heating it, and drawing it.
第３の発明によれば、コア用プラスチックのモノマーに
色素を溶解してから媒体を用いて所定温度で所定時間重
合させることにより色素を含有したコア用プラスチック
母材を作成でき、該コア用プラスチック母材をクラッド
用プラスチック母材の中央に設けた穴に充填して加熱し
線引きすることで、色素を含有したプラスチック光ファ
イバを製造できる。According to the third invention, a plastic base material for a core containing a dye can be created by dissolving a dye in a monomer of a plastic for a core and then polymerizing it at a predetermined temperature for a predetermined time using a medium, and the plastic base material for a core containing a dye can be prepared. A dye-containing plastic optical fiber can be manufactured by filling a hole in the center of a plastic base material for cladding with the base material, heating it, and drawing it.
（実施例）
第１図は本発明のプラスチック光ファイバ１０を示す横
断面図で、図中、１１は光透過性にすぐれた材料例えば
ポリメチルメタクリレート（以下ＰＭＭＡと称す）から
なるプラスチック製コアで、レーザを任意の波長で発振
させるための色素が添加してあり、その径は３．５μｍ
である。１２は前記コア１１を被覆する如く形成された
プラスチック製クラッドで、前記コア１１の材料である
ＰＭＭＡの屈折率（１，４９６）よりも屈折率の小さい
材料、例えば前記ＰＭＭＡに少量のポリフルオロアルキ
ルメタクリレート（以下ＰＦＭＡと称す）とを共重合さ
せることによって得られる、ＰＭＭＡ−ＰＦＭＡ （１
％）共重合体で前記ＰＭＭＡよりも屈折率がわずかに小
さい（１，４９３）。(Example) FIG. 1 is a cross-sectional view showing a plastic optical fiber 10 of the present invention. In the figure, 11 is a plastic core made of a material with excellent light transmittance, such as polymethyl methacrylate (hereinafter referred to as PMMA). , a dye is added to make the laser oscillate at a desired wavelength, and its diameter is 3.5 μm.
It is. Reference numeral 12 denotes a plastic cladding formed to cover the core 11, and is made of a material having a refractive index lower than the refractive index (1,496) of PMMA, which is the material of the core 11, such as PMMA with a small amount of polyfluoroalkyl. PMMA-PFMA (1
%) copolymer with a slightly lower refractive index than the PMMA (1,493).
第２図は、ＰＭＭＡに共重合されるＰＦＭＡの共重合比
と、ＰＭＭＡ−ＰＦＭＡ共重合体の屈折率の変化を示す
もので、横軸はＰＭＭＡ−ＰＦＭＡ共重合体中に含まれ
るＰＦＭＡの濃度、縦軸はＰＭＭＡ−ＰＦＭＡ共重合体
の屈折率を表わしており、該ＰＭＭＡ−ＰＦＭＡ共重合
体はＰＭＭＡより屈折率が小さく、シかも屈折率のバラ
ツキも少ないという特性を有していることがわかる。Figure 2 shows the copolymerization ratio of PFMA copolymerized with PMMA and the change in refractive index of the PMMA-PFMA copolymer, and the horizontal axis is the concentration of PFMA contained in the PMMA-PFMA copolymer. , the vertical axis represents the refractive index of the PMMA-PFMA copolymer, and it is said that the PMMA-PFMA copolymer has the characteristics of having a smaller refractive index than PMMA and less variation in the refractive index. Recognize.
第３図は、プラスチック光ファイバが単一モードになる
ために満足すべき条件を示す図で、横軸はクラッドの屈
折率、縦軸は前記プラスチック光ファイバのコア外径を
表わしており、光の波長を０．５μｍ１コアの屈折率を
１．４９６として得られたデータである。図中、斜線で
表わした部分が単一モード条件を満足する領域である。FIG. 3 is a diagram showing the conditions that must be satisfied for a plastic optical fiber to become a single mode. The horizontal axis represents the refractive index of the cladding, and the vertical axis represents the outer diameter of the core of the plastic optical fiber. This data was obtained with the wavelength of 0.5 μm and the refractive index of one core being 1.496. In the figure, the shaded area is the area that satisfies the single mode condition.
本実施例によるプラスチック光ファイバ１０（コア径０
゜３５μｍ、クラッドの屈折率１．４９３）は図中ａ点
で示す領域に相当し、単一モード条件を満足しているこ
とがわかる。Plastic optical fiber 10 according to this embodiment (core diameter 0
35 μm, the refractive index of the cladding is 1.493) corresponds to the region indicated by point a in the figure, and it can be seen that the single mode condition is satisfied.
次に、前記コア１１と、該コア１１に含有される色素と
、レーザ発振との関係を説明する。Next, the relationship between the core 11, the dye contained in the core 11, and laser oscillation will be explained.
第１表
第１表は、レーザ発振波長帯でプラスチック光ファイバ
１０の損失が十分低い条件のもとで、ＰＭＭＡからなる
前記コア１１に含有させる色素であるクマリン誘導体あ
るいはキサンテン系色素との組み合わせとによるプラス
チック光ファイバ１０でのレーザ発振波長の関係と、重
水素化ＰＭＭＡからなる前記コア１１に含有させるクマ
リン誘導体、キサンテン系色素、オキサジン系色素ある
いはシアニン系色素との組合せによるプラスチック光フ
ァイバ１０でのレーザ発振波長の関係を表わしている。Table 1 Table 1 shows the combinations of coumarin derivatives or xanthene dyes that are dyes to be contained in the core 11 made of PMMA under conditions where the loss of the plastic optical fiber 10 is sufficiently low in the laser oscillation wavelength band. The relationship between the laser oscillation wavelength in the plastic optical fiber 10 according to This shows the relationship between laser oscillation wavelengths.
該第１表によれば、前記コア１１に含有される色素の種
類を選択するとにより、広い波長範囲でのレーザ発振が
可能であり、第１表から０．５μｍ〜０．８７μｍまで
のレーザ発振波長範囲をカバーできることがわかる。ま
た、２種類以上の色素を添加することによって、１種類
のプラスチック光ファイバのレーザ発振波長範囲を拡げ
ることも可能である。According to Table 1, laser oscillation in a wide wavelength range is possible by selecting the type of dye contained in the core 11, and from Table 1, laser oscillation in a wide wavelength range is possible. It can be seen that the wavelength range can be covered. Furthermore, by adding two or more types of dyes, it is also possible to widen the laser oscillation wavelength range of one type of plastic optical fiber.
第４図はＰＭＭＡからなるコア１１に、キサンテン系色
素であるローダミン６Ｇを添加してプラスチック光ファ
イバ１０に、波長０．５１４５μｍ、出力２００ｍＷの
アルゴンレーザで励起したときの色素の濃度とレーザ発
振出力との関係を実線Ａで示しており、横軸は濃度、縦
軸はレーザ発振出力を表わしている。該第４図はコア１
１中の色素濃度が１重量％以上になると濃度消耗が顕著
になり、レーザ効率が低下し、またコア中の色素濃度が
０．００１重量％未満の場合にはレーザ発振がほとんど
観測されていないため、コア中に含有させる色素濃度は
０．００１重量％以上、１重量％以下が望ましいことが
わかる。Figure 4 shows the concentration of the dye and the laser oscillation output when rhodamine 6G, which is a xanthene dye, is added to the core 11 made of PMMA, and the plastic optical fiber 10 is excited with an argon laser with a wavelength of 0.5145 μm and an output of 200 mW. A solid line A shows the relationship between the two, with the horizontal axis representing the concentration and the vertical axis representing the laser oscillation output. The figure 4 shows core 1
When the dye concentration in the core is 1% by weight or more, concentration consumption becomes noticeable and laser efficiency decreases, and when the dye concentration in the core is less than 0.001% by weight, almost no laser oscillation is observed. Therefore, it can be seen that the concentration of the dye contained in the core is preferably 0.001% by weight or more and 1% by weight or less.
以下に本発明のプラスチック光ファイバの第１の製造方
法について説明する。The first method of manufacturing a plastic optical fiber of the present invention will be explained below.
まず、Ｐ Ｍ Ｍ Ａ （３、５ａｎφＸ １００ ＋
ｕφ）からなるコア母材を、キチンサン系色素であるロ
ーダミン６Ｇ−２００ｍｇを水１００ｃｃに溶解させた
溶液中に、８５℃の一定温度で１週間浸漬させることに
より色素を前記コア母材に添加する。First, P M M A (3,5anφX 100 +
The pigment is added to the core base material by immersing the core base material consisting of uφ) in a solution of 200 mg of Rhodamine 6G, a chitinous pigment, dissolved in 100 cc of water at a constant temperature of 85° C. for one week. .
さらに前記溶解中から該コア母材を取り出し、８５℃の
一定温度で１週間乾燥させることにより含有される色素
濃度が０．１重量％のコア母材が作製される。Further, the core base material is taken out from the melt and dried at a constant temperature of 85° C. for one week, thereby producing a core base material containing a pigment concentration of 0.1% by weight.
次に、第５図に示す如くチニーブ状となしたクラッド母
材２２はＰＭＭＡに少量のＰＦＭＡを共重合させたＰＭ
ＭＡ−ＰＦＭＡ （１％）共重合体からなり、その中心
部に設けられた穴に、前記工程にて色素が添加されたコ
ア母材２１を充填して、プラスチック光ファイバ母材２
０を形成し、電気炉３０にて２３０℃で加熱しながら該
プラスチック光ファイバ母材２０を、送り速度０．１ｍ
ｍ／旧Ｎ、線引き速度１００ ｍ／ｗｉｎで線引きする
ことにより本発明に係るプラスチック光ファイバ１０が
製造できる。Next, as shown in FIG. 5, the cladding base material 22 formed into a tinib shape is made of PM made by copolymerizing PMMA with a small amount of PFMA.
The plastic optical fiber preform 2 is made of MA-PFMA (1%) copolymer, and the hole provided in its center is filled with the core preform 21 to which the dye has been added in the above step.
0 and heated the plastic optical fiber preform 20 at 230° C. in an electric furnace 30 at a feed rate of 0.1 m.
The plastic optical fiber 10 according to the present invention can be manufactured by drawing at a drawing speed of 100 m/win.
以上の工程条件により製造されたプラスチック光ファイ
バ１０はクラッド外径１２５μｍ１コア外径３．５μｍ
１遮断波長０．４３μｍの特性を有していることがわか
った。また１ｍ長の前記プラスチック光ファイバ１０を
アルゴンレーザ（波長０．５１４５μｍ、出力２００ｍ
Ｗ）で励起したところ、波長０．５μｍ１出力９０ｍＷ
のレーザ発振を観測（第４図実線Ａ）Ｌ、しきい値は１
ｍＷで、従来の色素レーザ（色素を有機溶媒に溶解した
溶液の形で用いられることが多い）の約１／１００であ
ることがわかった。The plastic optical fiber 10 manufactured under the above process conditions has a cladding outer diameter of 125 μm and a core outer diameter of 3.5 μm.
It was found that it has a characteristic of 1 cutoff wavelength of 0.43 μm. In addition, the 1 m long plastic optical fiber 10 was connected to an argon laser (wavelength: 0.5145 μm, output: 200 m).
When excited with W), the wavelength was 0.5 μm and the output power was 90 mW.
Observe the laser oscillation (solid line A in Figure 4) L, the threshold value is 1
mW, it was found to be about 1/100 of that of conventional dye lasers (often used in the form of a solution of a dye dissolved in an organic solvent).
本実施例では、コア母材を浸漬する色素溶液の溶媒とし
て水溶液を用いたが１、エチルアルコールまたはアセト
ンを溶媒としても、コア母材に色素を添加することがで
きる。In this example, an aqueous solution was used as the solvent for the dye solution in which the core base material is immersed, but the dye can also be added to the core base material using ethyl alcohol or acetone as a solvent.
次に、本発明のプラスチック光ファイバの第２の製造方
法について説明する。Next, a second method for manufacturing a plastic optical fiber of the present invention will be explained.
まず、ＰＭＭＡのモノマーであるメチルクリレート（Ｍ
ＭＡ）１見にキサンテン系色素であるローダミン６Ｇを
溶解し、重合開始剤としてアゾシタ中シャリオクタン（
０，０１膳ｏｌ／Ｌ）、連鎖移動剤としてノルマルブチ
ルメルカプタン（０゜０１ ｓｏｌ ／Ｌ）を用いて、
１３０℃で８時間の条件下で重合させる。さらに完全な
重合体とするために、温度を１８０℃まで上昇させこの
状態で４時間重合させることにより、含有色素濃度が０
゜１ｆｆｉ量％のＰＭＭＡで構成されるコア母材を作製
する。First, methyl acrylate (M
MA) Firstly, rhodamine 6G, which is a xanthene dye, was dissolved, and Charioctane (
0.01 sol/L), using n-butyl mercaptan (0°01 sol/L) as a chain transfer agent,
Polymerization is carried out at 130° C. for 8 hours. In order to make a more complete polymer, the temperature was raised to 180°C and polymerization was carried out in this state for 4 hours, so that the concentration of the dye contained was reduced to 0.
A core base material composed of 1ffi% PMMA is produced.
以後は第１の製造方法と同じ工程によりプラスチック光
ファイバ１０を製造することができ、該プラスチック光
ファイバ１０を波長０．５１４５μｍ、出力２００ｍＷ
のアルゴンレーザで励起したところ、第４図で破線Ｂで
示したように、色素溶液にコア母材を浸漬した場合（同
図の実線Ａ）と同様に、高効率なレーザ発振特性を示し
た。Thereafter, the plastic optical fiber 10 can be manufactured by the same process as the first manufacturing method, and the plastic optical fiber 10 is manufactured with a wavelength of 0.5145 μm and an output of 200 mW.
When excited with an argon laser of .
（発明の効果）
以上説明したように、第１の発明によれば、可視から近
赤外の連続波長域で高効率なレーザ発振が可能であり、
プラスチック光ファイバの光閉じ込み効果により、励起
光源の出力を大幅に低くすることができるので、色素が
強い光に対しても劣化しにくく長期間使用することがで
き、光通信や光情報処理用の任意の波長のコヒーレント
光源として提供できる利点があるばかりか、光増幅器と
しての応用にも期待できるプラスチック光ファイバを提
供できる利点を有する。(Effects of the Invention) As explained above, according to the first invention, highly efficient laser oscillation is possible in a continuous wavelength range from visible to near-infrared,
Due to the light confinement effect of plastic optical fibers, the output of the excitation light source can be significantly lowered, making it possible for dyes to be used for long periods of time without deteriorating even in the presence of strong light, making them ideal for optical communications and optical information processing. Not only does it have the advantage of being able to provide a coherent light source of any wavelength, but it also has the advantage of providing a plastic optical fiber that can be expected to be used as an optical amplifier.
第２の発明並びに第３の発明によれば、第１の発明の効
果を冑するプラスチック光ファイバを簡易かつ的確に製
造できるという効果を有する。According to the second invention and the third invention, it is possible to easily and accurately manufacture a plastic optical fiber that overcomes the effects of the first invention.
第１図は本発明のプラスチック光ファイバを示した横断
面図、第２図はＰＭＭＡに対するＰＦＭＡの共重合比と
屈折率の関係を示した図、第３図はプラスチック光ファ
イバが単一モードになるために満足すべき条件を示した
図、第４図は本発明のプラスチック光ファイバをレーザ
で励起したときの色素濃度とレーザ発振出力との関係を
示した図、第５図は本発明のプラスチック光ファイバの
線引き方法を示した図である。
図中、１０・・・プラスチック光ファイバ、１１・・・
プラスチックコア、１２・・・プラスチッククラッド、
２０・・・プラスチック光ファイバ母材、２１・・・コ
ア母材、２２・・・クラッド母材、３０・・・電気炉。Figure 1 is a cross-sectional view showing the plastic optical fiber of the present invention, Figure 2 is a diagram showing the relationship between the copolymerization ratio of PFMA to PMMA and the refractive index, and Figure 3 is a diagram showing the plastic optical fiber in a single mode. Figure 4 is a diagram showing the relationship between the dye concentration and laser oscillation output when the plastic optical fiber of the present invention is excited by a laser, and Figure 5 is a diagram showing the conditions that must be satisfied for the plastic optical fiber of the present invention to be satisfied. FIG. 3 is a diagram showing a method of drawing a plastic optical fiber. In the figure, 10... plastic optical fiber, 11...
Plastic core, 12...Plastic cladding,
20... Plastic optical fiber base material, 21... Core base material, 22... Clad base material, 30... Electric furnace.
Claims (7)
より屈折率の低いプラスチック製クラッドで被覆したプ
ラスチック光ファイバにおいて、前記コアに色素を含有
させたことを特徴とするプラスチック光ファイバ。(1) A plastic optical fiber comprising a plastic core with excellent light transmittance coated with a plastic cladding having a lower refractive index than the core, characterized in that the core contains a dye.
ード条件を満足することを特徴とする特許請求の範囲第
１項記載のプラスチック光ファイバ。(2) The plastic optical fiber according to claim 1, wherein the core diameter and the refractive index of the core and cladding satisfy a single mode condition.
）から構成され、クマリン誘導体あるいはキサンテン系
色素が１種類あるいは２種類以上添加されていることを
特徴とする特許請求の範囲第１項又は第２項記載のプラ
スチック光ファイバ。(3) The core is made of polymethyl methacrylate (PMMA).
), and one or more types of coumarin derivatives or xanthene pigments are added thereto.
ら構成され、クマリン誘導体、キサンテン系色素、オキ
サジン系色素あるいはシアニン系色素のうち１種類ある
いは２種類以上添加されていることを特徴とする特許請
求の範囲第１項又は第２項記載のプラスチック光ファイ
バ。(4) The core is composed of deuterated polymethyl methacrylate, and one or more of a coumarin derivative, a xanthene dye, an oxazine dye, or a cyanine dye is added thereto. Plastic optical fiber according to scope 1 or 2.
１重量％であることを特徴とする特許請求の範囲第１項
又は第３項乃至第４項のいずれか１項記載のプラスチッ
ク光ファイバ。(5) The concentration of the dye added to the core is from 0.001 to
1% by weight of the plastic optical fiber according to claim 1 or any one of claims 3 and 4.
を所定温度で、所定時間浸漬することにより、該コア用
プラスチック母材に前記色素を含有させた後、所定温度
で所定時間、該コア用プラスチック母材を乾燥させる第
１の工程と、 該コア用プラスチック母材をクラッド用プラスチック母
材の中央に設けた穴に充填してなるプラスチック光ファ
イバ母材を、所定温度、所定速度で加熱紡糸する第２の
工程とを有することを特徴とするプラスチック光ファイ
バの製造方法。(6) The plastic base material for the core is immersed in a solution in which the pigment is dissolved at a predetermined temperature for a predetermined time to make the plastic base material for the core contain the pigment, and then the core is soaked at a predetermined temperature for a predetermined time. a first step of drying the plastic base material for the core, and heating the plastic optical fiber base material formed by filling the plastic base material for the core into a hole provided in the center of the plastic base material for the cladding at a predetermined temperature and speed; A method for producing a plastic optical fiber, comprising a second step of spinning.
媒体を用いて所定温度、所定時間で重合させることによ
り色素を含有するコア用プラスチック母材を作成する第
１の工程と、 コア用プラスチック母材をクラッド用プラスチック母材
の中央に設けた穴に充填してなるプラスチック光ファイ
バ母材を、所定温度、所定速度で加熱紡糸する第２の工
程とを有することを特徴とするプラスチック光ファイバ
の製造方法。(7) Dissolve the dye in the monomer of the plastic for the core,
A first step of creating a core plastic base material containing a dye by polymerizing it using a medium at a predetermined temperature and for a predetermined time; and a first step of creating a core plastic base material containing a dye, and inserting the core plastic base material into a hole provided in the center of the cladding plastic base material. A method for producing a plastic optical fiber, comprising a second step of heating and spinning the filled plastic optical fiber preform at a predetermined temperature and a predetermined speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62019949A JPS63188121A (en) | 1987-01-30 | 1987-01-30 | Plastic optical fiber and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62019949A JPS63188121A (en) | 1987-01-30 | 1987-01-30 | Plastic optical fiber and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63188121A true JPS63188121A (en) | 1988-08-03 |
Family
ID=12013456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62019949A Pending JPS63188121A (en) | 1987-01-30 | 1987-01-30 | Plastic optical fiber and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63188121A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996032664A1 (en) * | 1995-04-11 | 1996-10-17 | Keisuke Sasaki | Optical device and method of production thereof |
| WO2000070719A1 (en) * | 1999-05-13 | 2000-11-23 | Keio University | Plastic optical fiber and plastic optical fiber laser device, and method for manufacture thereof |
| JP2013239738A (en) * | 2000-05-23 | 2013-11-28 | Imra America Inc | Modular, high-energy, widely wavelength tunable and ultrafast fiber light source |
| JP2016075505A (en) * | 2014-10-03 | 2016-05-12 | 株式会社日立製作所 | Optical fiber strain gage, optical fiber strain sensor, and optical fiber strain sensing system |
| WO2019123691A1 (en) * | 2017-12-19 | 2019-06-27 | 株式会社島津製作所 | Method for producing tubular laser light source, tubular laser light source, and detector using same tubular laser light source |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934333A (en) * | 1972-07-27 | 1974-03-29 | ||
| JPS49123295A (en) * | 1973-03-29 | 1974-11-26 | ||
| JPS5465556A (en) * | 1977-10-14 | 1979-05-26 | Du Pont | Lowwdamping optical fibers of heavyyhydrogenized polymer |
| JPS60115275A (en) * | 1983-08-30 | 1985-06-21 | ザ・ボ−ド・オブ・トラステイ−ズ・オブ・ザ・レランド・スタンフオ−ド・ジユニア・ユニバ−シテイ | Fiber optical photoamplifier |
| JPS60175477A (en) * | 1984-02-21 | 1985-09-09 | Hoya Corp | Laser light amplifier |
| JPS61278198A (en) * | 1985-06-03 | 1986-12-09 | 株式会社東芝 | Electronic circuit module |
-
1987
- 1987-01-30 JP JP62019949A patent/JPS63188121A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934333A (en) * | 1972-07-27 | 1974-03-29 | ||
| JPS49123295A (en) * | 1973-03-29 | 1974-11-26 | ||
| JPS5465556A (en) * | 1977-10-14 | 1979-05-26 | Du Pont | Lowwdamping optical fibers of heavyyhydrogenized polymer |
| JPS60115275A (en) * | 1983-08-30 | 1985-06-21 | ザ・ボ−ド・オブ・トラステイ−ズ・オブ・ザ・レランド・スタンフオ−ド・ジユニア・ユニバ−シテイ | Fiber optical photoamplifier |
| JPS60175477A (en) * | 1984-02-21 | 1985-09-09 | Hoya Corp | Laser light amplifier |
| JPS61278198A (en) * | 1985-06-03 | 1986-12-09 | 株式会社東芝 | Electronic circuit module |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996032664A1 (en) * | 1995-04-11 | 1996-10-17 | Keisuke Sasaki | Optical device and method of production thereof |
| US5745629A (en) * | 1995-04-11 | 1998-04-28 | Sasaki; Keisuke | Optical device and method of producing the device |
| WO2000070719A1 (en) * | 1999-05-13 | 2000-11-23 | Keio University | Plastic optical fiber and plastic optical fiber laser device, and method for manufacture thereof |
| JP2013239738A (en) * | 2000-05-23 | 2013-11-28 | Imra America Inc | Modular, high-energy, widely wavelength tunable and ultrafast fiber light source |
| JP2016075505A (en) * | 2014-10-03 | 2016-05-12 | 株式会社日立製作所 | Optical fiber strain gage, optical fiber strain sensor, and optical fiber strain sensing system |
| WO2019123691A1 (en) * | 2017-12-19 | 2019-06-27 | 株式会社島津製作所 | Method for producing tubular laser light source, tubular laser light source, and detector using same tubular laser light source |
| JPWO2019123691A1 (en) * | 2017-12-19 | 2020-12-24 | 株式会社島津製作所 | Method for manufacturing a tubular laser light source, a tubular laser light source and a detector using the tubular laser light source. |
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