JPH0735941A - Fusion splicing method for optical waveguide and optical fiber - Google Patents

Fusion splicing method for optical waveguide and optical fiber

Info

Publication number
JPH0735941A
JPH0735941A JP15689193A JP15689193A JPH0735941A JP H0735941 A JPH0735941 A JP H0735941A JP 15689193 A JP15689193 A JP 15689193A JP 15689193 A JP15689193 A JP 15689193A JP H0735941 A JPH0735941 A JP H0735941A
Authority
JP
Japan
Prior art keywords
optical waveguide
optical fiber
fusion splicing
optical
laser 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
Application number
JP15689193A
Other languages
Japanese (ja)
Other versions
JP2596317B2 (en
Inventor
Masaaki Funahashi
正昭 舟橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP5156891A priority Critical patent/JP2596317B2/en
Publication of JPH0735941A publication Critical patent/JPH0735941A/en
Application granted granted Critical
Publication of JP2596317B2 publication Critical patent/JP2596317B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To provide the connecting method which does not apply strains to an optical waveguide at the time of fusion splicing of the optical waveguide and an optical fiber by laser heating. CONSTITUTION:The optical waveguide 11 and the optical fiber 12 are fusion spliced by laser heating after a peripheral part is so worked that the part for connecting the optical waveguide 11 and the optical fiber 12 projects from the peripheral part at a height above the spot diameter of the laser beam used at the time of connection. As a result, the irradiation of the part exclusive of the connecting point of the optical waveguide with the laser beam is prevented and the strains do not remain any more in the optical waveguide even if the fusion splicing is executed. The connection of low loss and low reflection is thus possible. Since the connecting part of the optical waveguide 11 and the optical fiber 12 are about the same size in the outside diameter and, therefore, there is an effect of correcting the axis misalignment by surface tension at the time of fusing and the loss by the axis misalignment is suppressed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、光通信システムで用い
る光導波路と光ファイバとの接続方法に係わり、特に、
レーザ光を用いて融着させることにより接続を行う光導
波路と光ファイバとの融着接続方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting an optical waveguide and an optical fiber used in an optical communication system, and in particular,
The present invention relates to a fusion splicing method between an optical waveguide and an optical fiber, which are spliced together by using laser light.

【0002】[0002]

【従来の技術】光導波路と光ファイバとの接続には、両
者の端面同士を接着剤により接着することが行われる
が、その接続面での反射量を低くおさえる必要があると
きには、レーザ光による融着接続が用いられる。図2
に、従来から行われている炭酸ガス(CO2 )レーザの
レーザ光を用いた融着接続方法の概要を示す。
2. Description of the Related Art To connect an optical waveguide and an optical fiber, the end faces of the two are bonded with an adhesive. When it is necessary to keep the amount of reflection at the connecting face low, it is necessary to use a laser beam. A fusion splice is used. Figure 2
The outline of a conventional fusion splicing method using a laser beam of a carbon dioxide (CO 2 ) laser is shown in FIG.

【0003】この方法では、光導波路11と光ファイバ
12を、それぞれのコア13、14のずれがないような
位置関係に配置し、CO2 レーザからのレーザ光15
を、ミラー16とレンズ17を用いてその接続部に導
き、接続部の溶融および一体化を行った後に、徐冷によ
りその溶融部を固化することにより両者の永久接続を行
う。
In this method, the optical waveguide 11 and the optical fiber 12 are arranged in such a positional relationship that the cores 13 and 14 are not displaced, and the laser light 15 from the CO 2 laser is used.
Is guided to the connecting portion by using the mirror 16 and the lens 17, the connecting portion is melted and integrated, and then the melted portion is solidified by slow cooling so that both are permanently connected.

【0004】[0004]

【発明が解決しようとする課題】光導波路は、光ファイ
バと比べて広い幅を有しているため、従来の接続方法で
は、スポット径が接続を行う光ファイバ径に比して大き
なレーザを用いると、光導波路の接続箇所以外の部分に
までレーザ光が照射されてしまうことになる。接続箇所
以外の部分がレーザ光により加熱、溶融してしまうと、
その影響で光導波路内に歪が生じ、光導波路の本来の特
性が発揮されなくなる。このため、たとえば、外径が1
00μmの光ファイバの融着接続をCO2 レーザを用い
て行う場合には、そのレーザのスポット径を100μm
以下にすることが必要となる。しかし、CO2 レーザは
波長の長いレーザであるため、スポット径100μmと
いう値は、最小スポット径に近く、これを実現するため
には、光学系を高度に調整しなければならなかった。ま
た、YAG(yttrium aluminium garnet)レーザのよう
な波長の短いレーザでは、この程度のスポット径に集光
することは容易であるが、誤った位置にレーザを照射し
た場合には、やはり、光導波路に歪が形成されてしま
う。このため、レーザ照射には、高い精度を有した位置
制御系が必要であった。
Since the optical waveguide has a wider width than that of the optical fiber, the conventional connecting method uses a laser having a spot diameter larger than the diameter of the optical fiber to be connected. Then, the laser light will be irradiated even to the portion other than the connection portion of the optical waveguide. If the part other than the connection point is heated and melted by the laser light,
Due to the influence, distortion occurs in the optical waveguide, and the original characteristics of the optical waveguide cannot be exhibited. Therefore, for example, the outer diameter is 1
When fusion-splicing an optical fiber of 00 μm using a CO 2 laser, the spot diameter of the laser is 100 μm.
The following is required. However, since the CO 2 laser has a long wavelength, the spot diameter of 100 μm is close to the minimum spot diameter, and in order to realize this, the optical system had to be highly adjusted. Further, with a laser having a short wavelength such as a YAG (yttrium aluminum garnet) laser, it is easy to focus on a spot diameter of this level, but when the laser is irradiated at the wrong position, the optical waveguide is still generated. Distortion is formed in the. Therefore, laser irradiation requires a highly accurate position control system.

【0005】また、光ファイバ同士の融着接続では、レ
ーザ光の照射前にコア軸が若干ずれた状態で配置してい
ても、融着接続によりそのずれが補正された。これは、
融着接続時に、接続部が溶融して液体の性質をもつよう
になるため、表面積を極小化しようとする力が働くこと
による。しかし、従来の光導波路と光ファイバとの溶融
接続では、両者の大きさが違うため、この軸ずれを補正
する効果がなく、損失の少ない接続を行うためには、コ
ア軸合わせを精密に行う必要があった。
Further, in the fusion splicing of the optical fibers, even if the core axes are arranged with a slight deviation before the laser light irradiation, the deviation is corrected by the fusion splicing. this is,
This is because, at the time of fusion splicing, the connection portion is melted and has a liquid property, so that a force for minimizing the surface area is exerted. However, in the conventional fusion splicing of the optical waveguide and the optical fiber, the sizes of the two are different, so there is no effect of correcting this axis deviation, and in order to make a connection with little loss, the core axes are precisely aligned. There was a need.

【0006】そこで本発明の目的は、損失の少ない接続
が容易に行える光導波路と光ファイバとの融着接続方法
を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a fusion splicing method between an optical waveguide and an optical fiber which facilitates connection with less loss.

【0007】[0007]

【課題を解決するための手段】請求項1記載の発明で
は、光導波路の光ファイバと接続する部分が、融着接続
時にレーザ光を照射する方向から見て、周辺の部分に対
してレーザ光のスポット径以上の高さを有する突起部と
なるようにその接続部周辺を加工して取り除く光導波路
加工工程と、光導波路加工工程で形成された突起部と光
ファイバの端面をそれぞれのコア軸が一致するように突
き当てて配置する配置工程と、配置工程で配置された接
続部分にレーザ光を照射してその部分の融着接続を行う
融着接続工程とを具備する。
According to a first aspect of the present invention, a portion of an optical waveguide connected to an optical fiber is a laser beam with respect to a peripheral portion when viewed from a direction of irradiating a laser beam during fusion splicing. The optical waveguide processing step of processing and removing the periphery of the connection part so as to form a protrusion having a height equal to or larger than the spot diameter, and the protrusion formed in the optical waveguide processing step and the end face of the optical fiber And a fusion splicing step of irradiating the connecting portion arranged in the arranging step with a laser beam to perform fusion splicing of the portion.

【0008】すなわち請求項1記載の発明では、光導波
路と光ファイバの融着接続を行うまえに、光導波路のコ
アを含む接続部を加工して、その接続部が周辺の部分に
対して、レーザ光のスポット径以上の高さの突起部とな
るように周辺の加工を行う。これにより、レーザ光が光
導波路の突起部以外の部分に照射されることがなくな
り、光導波路の歪量を最小限に抑えることができる。ま
た、接続部の大きさが光ファイバの外径に近くなってい
るので、溶融状態における表面張力をコア軸ずれの補正
に利用できる。
That is, according to the first aspect of the present invention, before the fusion-splicing of the optical waveguide and the optical fiber is performed, the connecting portion including the core of the optical waveguide is processed, and the connecting portion is connected to the peripheral portion. The periphery is processed to form a protrusion having a height equal to or larger than the spot diameter of laser light. This prevents the laser light from being applied to a portion other than the protruding portion of the optical waveguide, and the distortion amount of the optical waveguide can be minimized. Further, since the size of the connecting portion is close to the outer diameter of the optical fiber, the surface tension in the molten state can be used for correcting the core axis deviation.

【0009】請求項2記載の発明では、光導波路の光フ
ァイバと接続する部分が、融着接続時にレーザ光を照射
する方向から見て、周辺の部分に対してレーザ光のスポ
ット径以上の高さを有する突起部となるようにその接続
部周辺を加工して取り除く光導波路加工工程と、光導波
路加工工程で形成された突起部と光ファイバの端面をそ
れぞれのコア軸が一致するように近接させて配置する配
置工程と、配置工程で近接された部分にレーザ光を照射
してそれらの端面を加熱する加熱工程と、加熱された2
つの端面を突き合わせて融着接続を行う融着接続工程と
を具備する。
According to the second aspect of the invention, the portion of the optical waveguide connected to the optical fiber is higher than the spot diameter of the laser light with respect to the peripheral portion when viewed from the direction of irradiating the laser light during fusion splicing. The optical waveguide processing step of processing and removing the periphery of the connection part so that it becomes a protrusion with a certain height, and the protrusion formed in the optical waveguide processing step and the end face of the optical fiber are brought close to each other so that their core axes match. A heating step of irradiating a laser beam to the portions close to each other in the positioning step to heat those end surfaces;
And a fusion splicing step in which two end faces are butted against each other for fusion splicing.

【0010】すなわち請求項2記載の発明では、光導波
路と光ファイバの融着接続を行うまえに、光導波路のコ
アを含む接続部を加工して、その接続部が周辺の部分に
対して、レーザ光のスポット径以上の高さの突起部とな
るように周辺の加工を行う。そして、両者の端面の加熱
を行った後に、融着接続を行う。これにより、レーザ光
が光導波路の突起部以外の部分に照射されることがなく
なり、光導波路の歪量を最小限に抑えることができるた
め、損失の少ない接続を行うことができる。また、接続
部の大きさが光ファイバの外径に近くなっているので、
溶融状態における表面張力をコア軸ずれの補正に利用で
きる。さらに、融着接続を行うまえに、両者の端面の加
熱を行う加熱工程を設けているため、端面に存在する微
少な凹凸を原因として、融着時に突き合わせ部に空気が
閉じ込められて損失が増加するようなことがない。
That is, according to the second aspect of the present invention, before performing the fusion splicing of the optical waveguide and the optical fiber, the connecting portion including the core of the optical waveguide is processed, and the connecting portion is formed with respect to the peripheral portion. The periphery is processed to form a protrusion having a height equal to or larger than the spot diameter of laser light. Then, after heating both end faces, fusion splicing is performed. This prevents the laser light from being applied to a portion other than the protruding portion of the optical waveguide, and the distortion amount of the optical waveguide can be suppressed to the minimum, so that connection with less loss can be performed. Also, since the size of the connection part is close to the outer diameter of the optical fiber,
The surface tension in the molten state can be used to correct the core axis deviation. Furthermore, since a heating step is performed to heat both end faces before performing fusion splicing, air is trapped in the abutting portion during fusion due to minute unevenness on the end faces, and loss increases. There is nothing to do.

【0011】[0011]

【実施例】以下、実施例につき本発明を詳細に説明す
る。
EXAMPLES The present invention will be described in detail below with reference to examples.

【0012】図1に実施例の光導波路と光ファイバの融
着接続方法の概要を示す。ここで用いている光導波路1
1は、石英系の光導波路である。
FIG. 1 shows an outline of a fusion splicing method of an optical waveguide and an optical fiber according to an embodiment. Optical waveguide 1 used here
Reference numeral 1 is a quartz optical waveguide.

【0013】本発明の融着接続方法では、まず、光導波
路11の接続部分の加工を行う。ここでは、光導波路の
光ファイバと接続を行う部分が周辺の部分から500μ
m高くなるように、周辺部分をダイシングソーを用いて
取り除き、図1に示したような形状の光導波路11を作
製した。突起部の幅は、接続する光ファイバの外径と同
じ125μmとしている。また、突起部の周辺部分から
の高さである500μmという値は、融着接続に用いた
CO2 レーザのスポット径から定めた値である。この値
は、用いるレーザ光のスポット径以上であればよく、た
とえば、100μmのスポット径を有するレーザを用い
る場合には、100μm以上に設定すればよい。
In the fusion splicing method of the present invention, first, the connecting portion of the optical waveguide 11 is processed. Here, the part of the optical waveguide that connects to the optical fiber is 500μ from the peripheral part.
The peripheral portion was removed using a dicing saw so that the height was increased by m, and an optical waveguide 11 having a shape as shown in FIG. 1 was produced. The width of the protrusion is 125 μm, which is the same as the outer diameter of the optical fiber to be connected. Further, the value of 500 μm, which is the height from the peripheral portion of the protrusion, is a value determined from the spot diameter of the CO 2 laser used for fusion splicing. This value may be equal to or larger than the spot diameter of the laser light used, and for example, when a laser having a spot diameter of 100 μm is used, it may be set to 100 μm or more.

【0014】加工を行った光導波路11は、接続を行う
光ファイバ12とそれぞれのコア13、14の軸が一致
するように配置される。CO2 レーザからのレーザ光1
5は、ミラー16により下方に曲げられ、レンズ17に
より集光され、光導波路11と光ファイバ12との接続
箇所に照射される。融着接続に適当なレーザ光強度は、
レンズ17の集光度により異なるが、20〜100ワッ
トの範囲に最適な条件が存在する。
The processed optical waveguide 11 is arranged so that the axes of the optical fiber 12 to be connected and the cores 13 and 14 coincide with each other. Laser light from CO 2 laser 1
The light beam 5 is bent downward by the mirror 16, condensed by the lens 17, and irradiated onto the connection point between the optical waveguide 11 and the optical fiber 12. The appropriate laser light intensity for fusion splicing is
There are optimum conditions in the range of 20 to 100 watts, although it depends on the degree of condensing of the lens 17.

【0015】接続時には、光導波路11と光ファイバ1
2の端面を密着させた状態でレーザ光照射を行ってもよ
いが、密着させる直前にレーザ光を照射し、両者の端面
を加熱した後に、それらの端面を突き合わせて接続を行
った方が、低損失な接続ができる。すなわち、密着状態
で溶融接続を行うと、端面に存在する凹凸に起因して、
融着時に突き合わせ部に空気が閉じ込められ、そのため
に損失が増加する場合がある。これに対し、上述のよう
に予め端面の加熱を行うと、凹凸が溶融されるため、突
き合わせ部に空気が閉じ込められるようなことがなく、
低損失な接続が可能となる。
At the time of connection, the optical waveguide 11 and the optical fiber 1
Laser light irradiation may be performed in a state where the end faces of 2 are in close contact with each other, but it is better to irradiate the laser beam immediately before making them in close contact with each other, heat both end faces, and then connect the end faces by connecting them. Low loss connection is possible. That is, when fusion connection is performed in a close contact state, due to the unevenness present on the end surface,
Air may be trapped in the butt during fusion, which may increase losses. On the other hand, if the end face is heated in advance as described above, the unevenness is melted, so that air is not trapped in the butted portion,
A low loss connection is possible.

【0016】実施例で作製した光導波路と光ファイバと
の融着接続部分の反射量、損失量の評価を行ったとこ
ろ、その接続部分は、従来方法を用いて形成された接続
部分に比して、小さな反射量、損失量を示した。また、
実施例の融着接続方法を用いて、故意にコアの軸をずら
して配置した接続部分の融着接続を行ったところ、融着
接続後には軸ずれ量が減少しており、本発明の融着接続
方法に軸ずれ補正効果があることが確認できた。
When the reflection amount and the loss amount of the fusion spliced portion between the optical waveguide and the optical fiber manufactured in the example were evaluated, the spliced portion was compared with the spliced portion formed by the conventional method. And showed a small amount of reflection and loss. Also,
Using the fusion splicing method of the example, when the fusion splicing of the connection portion, which is intentionally displaced from the axis of the core, is performed, the amount of misalignment is reduced after the fusion splicing, and the fusion of the present invention is performed. It was confirmed that the connecting and disconnecting method had the effect of correcting the axis deviation.

【0017】なお、実施例では、CO2 レーザを用いて
いるが、レーザ光源はこれに限るものではなく、他のレ
ーザ光源を用いることもできる。本発明の接続方法によ
れば、レーザ光のスポット径に対する制限が緩和される
ため、他のレーザ光源を用いる場合に、その集光光学系
を簡単な構成のものとすることができる。
Although the CO 2 laser is used in the embodiment, the laser light source is not limited to this, and another laser light source can be used. According to the connection method of the present invention, the restriction on the spot diameter of the laser light is relaxed, so that when another laser light source is used, the condensing optical system can be made to have a simple configuration.

【0018】また、実施例では、加工を行った面の突起
状部分以外の部分を全て取り除いているが、加工形状は
これに限られるものではなく、レーザ光の照射が不必要
であるにもかかわらず、レーザ光が照射されてしまう部
分がないような加工形状であればどのような形状であっ
てもよい。このため、たとえば、接続部周辺のみを取り
除くような形状とすることもできる。
Further, in the embodiment, all the portions other than the protruding portions on the processed surface are removed, but the processed shape is not limited to this, and the irradiation of laser light is unnecessary. Regardless, any shape may be used as long as it has a processed shape such that there is no portion irradiated with laser light. Therefore, for example, the shape can be such that only the periphery of the connection portion is removed.

【0019】[0019]

【発明の効果】以上説明したように、請求項1記載の発
明では、大きなスポット径をもったレーザ光を用いて
も、融着接続時に光導波路の接続部分以外には、レーザ
光が照射されないため、光導波路に歪が生ずることがな
く、低損失、低反射の接続が可能となる。また、接続部
の大きさが近くなっているので、溶融状態における表面
張力をコア軸ずれの補正に利用できる。さらに、レーザ
光のスポット径を細く絞る必要がなくなるため、安価な
光学系をレーザ光に対して用いることができるといった
利点も存在する。
As described above, according to the first aspect of the invention, even if the laser beam having a large spot diameter is used, the laser beam is not irradiated to the portion other than the connecting portion of the optical waveguide at the time of fusion splicing. Therefore, the optical waveguide is not distorted, and the connection with low loss and low reflection becomes possible. Further, since the size of the connecting portion is close, the surface tension in the molten state can be used for correcting the core axis deviation. Further, since it is not necessary to narrow the spot diameter of the laser light, there is an advantage that an inexpensive optical system can be used for the laser light.

【0020】請求項2記載の発明では、大きなスポット
径をもったレーザ光を用いても、融着接続時に光導波路
の接続部分以外には、レーザ光が照射されないため、光
導波路に歪が生ずることがなく、低損失、低反射の接続
が可能となる。また、接続部の大きさが近くなっている
ので、溶融状態における表面張力をコア軸ずれの補正に
利用できる。そして、融着接続を行うまえに、端面の加
熱を行い、端面上の凹凸を溶融しているため、突き合わ
せ部に空気が閉じ込められるようなことがなく、低損失
な接続が可能となる。さらに、レーザ光のスポット径を
細く絞る必要がなくなるため、安価な光学系をレーザ光
に対して用いることができるといった利点も存在する。
According to the second aspect of the present invention, even if a laser beam having a large spot diameter is used, the laser beam is not irradiated to the portion other than the connecting portion of the optical waveguide at the time of fusion splicing, so that the optical waveguide is distorted. Connection with low loss and low reflection is possible. Further, since the size of the connecting portion is close, the surface tension in the molten state can be used for correcting the core axis deviation. Further, since the end face is heated to melt the irregularities on the end face before performing the fusion splicing, air is not trapped in the abutting portion, and a low loss connection can be performed. Further, since it is not necessary to narrow the spot diameter of the laser light, there is an advantage that an inexpensive optical system can be used for the laser light.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例による光導波路と光ファイバの
融着接続方法の概略を示す説明図である。
FIG. 1 is an explanatory view showing an outline of a fusion splicing method for an optical waveguide and an optical fiber according to an embodiment of the present invention.

【図2】従来例による光導波路と光ファイバの融着接続
方法の概略を示す説明図である。
FIG. 2 is an explanatory diagram showing an outline of a fusion splicing method of an optical waveguide and an optical fiber according to a conventional example.

【符号の説明】[Explanation of symbols]

11 光導波路 12 光ファイバ 13 光導波路のコア 14 光ファイバのコア 15 レーザ光 16 ミラー 17 レンズ 11 Optical Waveguide 12 Optical Fiber 13 Optical Waveguide Core 14 Optical Fiber Core 15 Laser Light 16 Mirror 17 Lens

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 光導波路の光ファイバと接続する部分
が、融着接続時にレーザ光を照射する方向から見て、周
辺の部分に対して前記レーザ光のスポット径以上の高さ
を有する突起部となるようにその接続部周辺を加工して
取り除く光導波路加工工程と、 前記光導波路加工工程で形成された突起部と前記光ファ
イバの端面をそれぞれのコア軸が一致するように突き当
てて配置する配置工程と、 前記配置工程で配置された接続部分にレーザ光を照射し
てその部分の融着接続を行う融着接続工程とを具備する
ことを特徴とする光導波路と光ファイバの融着接続方
法。
1. A projection portion in which a portion of an optical waveguide connected to an optical fiber has a height higher than a spot diameter of the laser light with respect to a peripheral portion when viewed from a direction of irradiating the laser light at the time of fusion splicing. The optical waveguide processing step of removing the periphery of the connecting portion by processing so as to obtain a protrusion formed in the optical waveguide processing step and the end face of the optical fiber are arranged so as to abut against each other so that their core axes coincide with each other. And a fusion splicing step of irradiating the connecting portion arranged in the arranging step with a laser beam to perform fusion splicing of the portion, and fusing the optical waveguide and the optical fiber. How to connect.
【請求項2】 光導波路の光ファイバと接続する部分
が、融着接続時にレーザ光を照射する方向から見て、周
辺の部分に対して前記レーザ光のスポット径以上の高さ
を有する突起部となるようにその接続部周辺を加工して
取り除く光導波路加工工程と、 前記光導波路加工工程で形成された突起部と前記光ファ
イバの端面をそれぞれのコア軸が一致するように近接さ
せて配置する配置工程と、 前記配置工程で近接された部分にレーザ光を照射してそ
れらの端面を加熱する加熱工程と、 加熱された2つの端面を突き合わせて融着接続を行う融
着接続工程とを具備することを特徴とする光導波路と光
ファイバとの融着接続方法。
2. A projection portion in which a portion of the optical waveguide connected to an optical fiber has a height higher than a spot diameter of the laser light with respect to a peripheral portion when viewed from a direction of irradiating the laser light during fusion splicing. An optical waveguide processing step of processing and removing the periphery of the connecting portion so that the projections formed in the optical waveguide processing step and the end face of the optical fiber are arranged close to each other so that their core axes coincide with each other. A heating step of irradiating the portions close to each other in the placement step with laser light to heat their end faces, and a fusion splicing step of abutting the two heated end faces to perform fusion splicing. A method for fusion splicing an optical waveguide and an optical fiber, which comprises:
JP5156891A 1993-06-28 1993-06-28 Fusion splicing method of optical waveguide and optical fiber Expired - Fee Related JP2596317B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5156891A JP2596317B2 (en) 1993-06-28 1993-06-28 Fusion splicing method of optical waveguide and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5156891A JP2596317B2 (en) 1993-06-28 1993-06-28 Fusion splicing method of optical waveguide and optical fiber

Publications (2)

Publication Number Publication Date
JPH0735941A true JPH0735941A (en) 1995-02-07
JP2596317B2 JP2596317B2 (en) 1997-04-02

Family

ID=15637659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5156891A Expired - Fee Related JP2596317B2 (en) 1993-06-28 1993-06-28 Fusion splicing method of optical waveguide and optical fiber

Country Status (1)

Country Link
JP (1) JP2596317B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367417A1 (en) * 2002-05-23 2003-12-03 Corning Incorporated Optical fiber alignment technique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05224077A (en) * 1992-02-07 1993-09-03 Sumitomo Electric Ind Ltd Optical coupling device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05224077A (en) * 1992-02-07 1993-09-03 Sumitomo Electric Ind Ltd Optical coupling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367417A1 (en) * 2002-05-23 2003-12-03 Corning Incorporated Optical fiber alignment technique

Also Published As

Publication number Publication date
JP2596317B2 (en) 1997-04-02

Similar Documents

Publication Publication Date Title
JP2911932B2 (en) Optical waveguide connection
EP1071973B1 (en) Methods for connecting optical fibers to integrated optical waveguides
US4263495A (en) Method of splicing optical fibers by CO2 -laser
JPH09189826A (en) Optical coupling system device using ball lens, and manufacture of optical coupling system
JP3661790B2 (en) Use of lasers for fusion splicing of optical components with significantly different cross-sectional areas.
JP2596317B2 (en) Fusion splicing method of optical waveguide and optical fiber
JPH0463367B2 (en)
JP2003043288A (en) Method and device for lump processing of coated optical fiber for optical fiber tape
JP2958060B2 (en) Fusion splicing method of optical waveguide and optical fiber
JP3022132B2 (en) Fusion splicing method between silica glass waveguide element and optical fiber
JPS6213286A (en) Laser beam welding and fixing method
JP2008286948A (en) Fusion splicing method
JPH02251916A (en) Method for connecting quartz-based optical waveguide circuit and optical fiber
JP3607642B2 (en) Optical fiber fusion splicer
JPH05224077A (en) Optical coupling device
WO2021077572A1 (en) Method for changing laser output divergence angle
JPS5857722B2 (en) fiber optic connector
JPH0485504A (en) Manufacture of optical fiber coupler
JPH0875949A (en) Fusion splicing method for glass waveguide and optical fiber and fusion splicing device
JP2887356B2 (en) Fiber fusion spliced quartz waveguide device
JPS63163416A (en) Manufacture of optical semiconductor device
JPH11142688A (en) Method and structure for fixing optical fiber
Fujita et al. Method of splicing optical fibers by CO2 laser
JP2003075676A (en) Fusion splicing method for optical fiber
JPH05134137A (en) Structure of mount for mounting fiber fused connection type quartz waveguide device

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees