JPH071602Y2 - Optical fiber array - Google Patents

Optical fiber array

Info

Publication number
JPH071602Y2
JPH071602Y2 JP1989013662U JP1366289U JPH071602Y2 JP H071602 Y2 JPH071602 Y2 JP H071602Y2 JP 1989013662 U JP1989013662 U JP 1989013662U JP 1366289 U JP1366289 U JP 1366289U JP H071602 Y2 JPH071602 Y2 JP H071602Y2
Authority
JP
Japan
Prior art keywords
optical fiber
fiber array
holding
pair
plate
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.)
Expired - Lifetime
Application number
JP1989013662U
Other languages
Japanese (ja)
Other versions
JPH02104303U (en
Inventor
英一 長谷川
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.)
Shimadzu Corp
Original Assignee
Shimadzu 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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP1989013662U priority Critical patent/JPH071602Y2/en
Publication of JPH02104303U publication Critical patent/JPH02104303U/ja
Application granted granted Critical
Publication of JPH071602Y2 publication Critical patent/JPH071602Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、光通信コンポーネントにおける、光導波路へ
の入出力部に用いられる光ファイバアレイの構造に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the structure of an optical fiber array used as an input / output unit for an optical waveguide in an optical communication component.

〔従来の技術〕[Conventional technology]

光導波路を備えた素子例えば分岐器、合波器、分波器等
に光ファイバを接続するには、光ファイバ素線が埋め込
まれた光ファイバアレイを上記素子に密着させることに
より、光導波路と光ファイバとを接続している。
In order to connect an optical fiber to an element including an optical waveguide, such as a branching device, a multiplexer, a demultiplexer, etc., an optical fiber array in which an optical fiber element wire is embedded is brought into close contact with the above-mentioned element to form an optical waveguide. It is connected to an optical fiber.

第5図は光導波路形8×8スターカップラと呼ばれてい
るもので、光導波路(1)が基板(2)とガラス板
(3)との間に埋め込まれており、また光導波路(1)
の入出力部には光ファイバアレイ(4)がそれぞれ取付
けられ、これにより光ファイバアレイ(4)中の光ファ
イバ素線と光導波路(1)とが接続されている。
FIG. 5 shows what is called an optical waveguide type 8 × 8 star coupler, in which the optical waveguide (1) is embedded between the substrate (2) and the glass plate (3), and the optical waveguide (1 )
An optical fiber array (4) is attached to each of the input and output parts of the optical fiber array (4), and thereby the optical fiber element wires in the optical fiber array (4) and the optical waveguide (1) are connected.

第6図は従来の光ファイバアレイの部分断面図であり、
ガラス、セラミックス等の2枚の板材(11)に、ファイ
バ本数に応じたピッチでファイバの直径に応じた形状の
溝(12)をそれぞれ形成し、この溝(12)に光ファイバ
(13)をセットして2枚の板材(11)で挾着している。
この溝(12)は機械的に削って形成する場合もあるが、
Siの異方性エッチング法により形成することもある。
FIG. 6 is a partial sectional view of a conventional optical fiber array,
Grooves (12) each having a shape corresponding to the diameter of the fiber are formed at a pitch corresponding to the number of fibers on two plate materials (11) such as glass and ceramics, and the optical fiber (13) is formed in the groove (12). Set and put together with two plates (11).
This groove (12) may be formed by mechanically shaving,
It may be formed by a Si anisotropic etching method.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

しかしながら、上記のような溝(12)を加工する従来の
光ファイバアレイにおいては、溝の形状、位置等の精度
に限界があるため加工精度を所定値以上にまで向上ささ
せることは非常に困難であるという課題があった。
However, in the conventional optical fiber array for processing the groove (12) as described above, it is very difficult to improve the processing accuracy to a predetermined value or more because the accuracy of the shape and position of the groove is limited. There was a problem that was.

本考案は、係る課題を解決するためになされたもので、
支持板への光ファイバ素線の取付精度を向上させるこが
できる光ファイバアレイを得ることを目的とするもので
ある。
The present invention has been made to solve the above-mentioned problems,
An object of the present invention is to obtain an optical fiber array capable of improving the mounting accuracy of optical fiber strands to a support plate.

〔課題を解決するための手段〕[Means for Solving the Problems]

本考案に係る光ファイバアレイは、1本又は複数本の光
ファイバ素線と、この光ファイバ素線をその軸線に沿っ
て両方向から平行に挾持し、厚みが該光ファイバ素線の
直径以下の少なくとも一対の挾持板と、この挾持板及び
上記光ファイバ素線を挾着する一対の支持板とを備えた
ものである。
The optical fiber array according to the present invention sandwiches one or a plurality of optical fiber strands and the optical fiber strands in parallel from both directions along the axis thereof, and has a thickness of not more than the diameter of the optical fiber strands. It is provided with at least a pair of holding plates and a pair of supporting plates for holding the holding plates and the optical fiber wires.

〔作用〕[Action]

本考案においては、一対の支持板の上下方向から圧力を
加えると、この支持板間に挟まれている挾持板と光ファ
イバ素線に圧力が加わるが、光ファイバ素線により大き
い圧力が加わって上下方向が位置決めされる。一方光フ
ァイバ素線の横方向への位置決めについては、少なくと
も一対の挾持板にそれぞれ外方から横方向に挾持圧力を
かければ、挾持板間に挾持された光ファイバ素線が横方
向に位置固定されることとなる。
In the present invention, when pressure is applied from above and below the pair of support plates, pressure is applied to the holding plate and the optical fiber element wire sandwiched between the support plates, but a larger pressure is applied to the optical fiber element wire. The vertical direction is positioned. On the other hand, for lateral positioning of the optical fiber strands, if at least a pair of holding plates are applied with lateral clamping force from the outside, the optical fiber strands clamped between the holding plates are fixed in the horizontal direction. Will be done.

〔実施例〕〔Example〕

本考案の一実施例を第1〜3図に基づいて説明する。図
に示すように本実施例に係る光ファイバアレイ(21)
は、基本材料として溝がなく、平面度の出た一対の支持
板としての平板ガラス(22)を用い、光ファイバ素線
(23)の直径、平板ガラス(22)の内面(24)の平面度
及び挾持板(25)の平行度の各精度を積極的に利用した
点に特徴を有している。
An embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the optical fiber array according to this embodiment (21)
Uses a flat glass (22) as a pair of supporting plates having no groove as a basic material and having flatness. The diameter of the optical fiber element wire (23) and the flat surface of the inner surface (24) of the flat glass (22). The feature is that the precision and the parallelism of the holding plate (25) are positively used.

即ち、この実施例では平板ガラス(22)の内面(24)の
平面度として、例えば100mm×100mm当り数μm以下の凹
凸の面のものを用い、1本又は複数本(この図では1グ
ループ当り4本)の光ファイバ素線(23)の直径Dは12
5μmとする。この光ファイバ素線(23)を両方向から
挾持し、厚みTが光ファイバ素線(23)の直径D以下の
少なくとも一対の挾持板(25)は、厚みTが110μm、
両側面(25a)、(25b)間の平行度Aが0.05/100のガラ
ス板を用い、この挾持板(25)と光ファイバ素線(23)
とを交互に配列し、この挾持板(25)及び光ファイバ素
線(23)を一対の平板ガラス(22)により上下から挾着
している。また、平板ガラス(22)、光ファイバ素線
(23)及び挾持板(25)間に形成される隙間(26)には
エポキシ系接着剤等の粘性の低い接着剤を充填してい
る。平板ガラス(22)及び挾持板(25)の材質としては
ホウケイ酸ガラス(例えば「パイレックスガラス」(米
国コーニング社の登録商標))を用いている。
That is, in this embodiment, as the flatness of the inner surface (24) of the flat glass (22), for example, a surface having an unevenness of several μm or less per 100 mm × 100 mm is used. The diameter D of the four optical fiber strands (23) is 12
5 μm. The optical fiber strand (23) is clamped from both directions, and at least a pair of clamping plates (25) having a thickness T of not more than the diameter D of the optical fiber strand (23) have a thickness T of 110 μm,
A glass plate with a parallelism A between both side surfaces (25a) and (25b) of 0.05 / 100 is used. This holding plate (25) and the optical fiber element wire (23)
Are alternately arranged, and the holding plate (25) and the optical fiber element wire (23) are held from above and below by a pair of flat glass (22). The gap (26) formed between the flat glass (22), the optical fiber element wire (23) and the holding plate (25) is filled with an adhesive having a low viscosity such as an epoxy adhesive. Borosilicate glass (for example, "Pyrex glass" (registered trademark of Corning Incorporated) in the United States) is used as the material of the flat glass (22) and the holding plate (25).

次に光ファイバアレイ(21)の製造順序について説明す
る。第1〜3図に示すように、2枚の平板ガラス(22)
間に4本の光ファイバ素線(23)と挾持板(25)とを交
互に配列するとともに間隙(26)に接着剤を充填する。
次いで、この接着剤が硬化する前に、第1図に示すよう
に、平板ガラス(22)の上下方向から500gr/cm2程度の
圧力Bを加えるとともに、同図中の左右方向から挾持板
(25)部に70〜100gr/cm2の圧力Cを加える。これによ
り上下方向については光ファイバ素線(23)と平板ガラ
ス(22)間の隙間を零にし、左右方向については挾持板
(25)と光ファイバ素線(23)間の隙間を零にし、この
状態で、接着剤を硬化させる。次いで平板ガラス(22)
の端面(第1図中の紙面裏側)から出ている光ファイバ
素線(23)を補強処理した後、第2図中の面Eを切断研
磨し、次いで第1図中の線Fに従って切断すれば、複数
個の光ファイバアレイ素子(21a)を容易に得ることが
できる。
Next, the manufacturing sequence of the optical fiber array (21) will be described. As shown in Figs. 1-3, two flat glass plates (22)
The four optical fiber wires (23) and the holding plate (25) are alternately arranged between them and the gap (26) is filled with the adhesive.
Then, before the adhesive is cured, as shown in FIG. 1, a pressure B of about 500 gr / cm 2 is applied from the vertical direction of the flat glass (22), and the holding plate (from the horizontal direction in the figure) is applied. A pressure C of 70 to 100 gr / cm 2 is applied to part 25). As a result, the gap between the optical fiber wire (23) and the flat glass (22) is made zero in the vertical direction, and the gap between the holding plate (25) and the optical fiber wire (23) is made zero in the horizontal direction, In this state, the adhesive is cured. Then flat glass (22)
After reinforcing the optical fiber element wire (23) protruding from the end surface (the back side of the paper surface in FIG. 1), the surface E in FIG. 2 is cut and polished, and then cut along the line F in FIG. Then, a plurality of optical fiber array elements (21a) can be easily obtained.

従って本実施例においては、第1図中の上下方向につい
ては光ファイバ素線(23)との挾着面が所定の平面度を
具備する平板ガラス(22)により位置決めされ、左右方
向については光ファイバ素線(23)を挾持する挾持面が
所定の平行度を具備する挾持板(25)により位置決めさ
れ、これにより、光ファイバ素線(23)は平板ガラス
(22)の所定場所に精度良く固定することができ、しか
も光ファイバアレイ素子(21a)を大量に同時に生産す
ることができる。
Therefore, in the present embodiment, the vertical surface in FIG. 1 is positioned by the flat glass (22) having a predetermined flatness on the attachment surface with the optical fiber element wire (23), and the horizontal direction is the optical axis. The holding surface for holding the fiber element wire (23) is positioned by the holding plate (25) having a predetermined parallelism, whereby the optical fiber element wire (23) is accurately placed at a predetermined position on the flat glass (22). It can be fixed, and a large number of optical fiber array elements (21a) can be simultaneously produced.

なお、上記実施例では光ファイバ素線(23)の直径D
が、挾持板(25)の厚みTより大きい場合を示したが、
直径Dと厚みTは同一であってもよい。また光ファイバ
素線(23)は4本で1グループをなす場合を示したが、
1本でもその他複数本であってもよく、さらに各グルー
プ毎に素線(23)の本数を変えた場合であってもよい。
In the above embodiment, the diameter D of the optical fiber wire (23) is
Is larger than the thickness T of the holding plate (25),
The diameter D and the thickness T may be the same. Also, the case where four optical fiber wires (23) form one group is shown.
There may be one or a plurality of other wires, and further, the number of wires (23) may be changed for each group.

また、第4図に示すように、複数個の挾持板(25)間に
挾持された光ファイバ素線(23)間にさらに所定幅の不
等間隔スペーサ(31)を1箇所又はそれ以上のところに
設けてもよい。この場合にはこのスペーサ(31)が挾持
板としての機能をも兼備していることになる。これによ
り光ファイバ素線(23)をファイバ径間隔以外の所定の
ピッチに配列することができる。
Further, as shown in FIG. 4, an unequal interval spacer (31) having a predetermined width is further provided at one or more positions between the optical fiber wires (23) held between a plurality of holding plates (25). It may be provided in the place. In this case, the spacer (31) also has a function as a holding plate. Thereby, the optical fiber strands (23) can be arranged at a predetermined pitch other than the fiber diameter interval.

〔考案の効果〕[Effect of device]

本考案は以上説明したとおり、光ファイバ素線を少なく
とも一対の挾持板と一対の支持板とにより位置決めする
という構成をとったことから、支持板に溝を形成しなく
ても光ファイバ素線を正確に位置固定することができる
こととなり、容易に隆精度な光ファイバアレイを得るこ
とができる。
As described above, the present invention has a configuration in which the optical fiber strand is positioned by at least a pair of holding plates and a pair of support plates, so that the optical fiber strand can be formed without forming a groove in the support plate. Since the position can be accurately fixed, it is possible to easily obtain an optical fiber array with high accuracy.

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

第1〜3図は本考案の一実施例を示す図であり、第1図
は光ファイバアレイの正面図、第2図は拡大平面図、第
3図は拡大正面図、第4図は本考案の別の実施例を示す
拡大正面図、第5図は光ファイバアレイを取付けた光導
波路を示す斜視図、第6図は従来の光ファイバアレイの
部分断面図である。 (21)…光ファイバアレイ (22)…支持板(平板ガラス) (23)…光ファイバ素線 (25)…挾持板 (31)…挾持板(不等間隔スペーサ) D…直径 T…厚み なお、各図中同一符号は同一又は相当部分を示す。
1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a front view of an optical fiber array, FIG. 2 is an enlarged plan view, FIG. 3 is an enlarged front view, and FIG. 4 is a book. FIG. 5 is an enlarged front view showing another embodiment of the invention, FIG. 5 is a perspective view showing an optical waveguide to which an optical fiber array is attached, and FIG. 6 is a partial sectional view of a conventional optical fiber array. (21) ... Optical fiber array (22) ... Support plate (flat glass) (23) ... Optical fiber strand (25) ... Clamping plate (31) ... Clamping plate (unevenly spaced spacers) D ... Diameter T ... Thickness In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】1本又は複数本の光ファイバ素線と、この
光ファイバ素線をその軸線に沿って両方向から平行に挾
持し、厚みが該光ファイバ素線の直径以下の少なくとも
一対の挾持板と、この挾持板及び上記光ファイバ素線を
挾着する一対の支持板とを備えたことを特徴とする光フ
ァイバアレイ。
1. One or a plurality of optical fiber strands and at least one pair of sandwiching the optical fiber strands in parallel from both directions along the axis thereof and having a thickness not larger than the diameter of the optical fiber strands. An optical fiber array comprising a plate and a pair of support plates for holding the holding plate and the optical fiber element wire.
JP1989013662U 1989-02-08 1989-02-08 Optical fiber array Expired - Lifetime JPH071602Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989013662U JPH071602Y2 (en) 1989-02-08 1989-02-08 Optical fiber array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989013662U JPH071602Y2 (en) 1989-02-08 1989-02-08 Optical fiber array

Publications (2)

Publication Number Publication Date
JPH02104303U JPH02104303U (en) 1990-08-20
JPH071602Y2 true JPH071602Y2 (en) 1995-01-18

Family

ID=31224161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989013662U Expired - Lifetime JPH071602Y2 (en) 1989-02-08 1989-02-08 Optical fiber array

Country Status (1)

Country Link
JP (1) JPH071602Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042830A1 (en) * 1999-12-09 2001-06-14 Nitto Jushi Kogyo Co., Ltd. Parallel optical transmission line body and method for producing the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62132503U (en) * 1986-02-13 1987-08-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042830A1 (en) * 1999-12-09 2001-06-14 Nitto Jushi Kogyo Co., Ltd. Parallel optical transmission line body and method for producing the same

Also Published As

Publication number Publication date
JPH02104303U (en) 1990-08-20

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