JPH02267501A - Connector ferrule with filter of optical fiber and its manufacture - Google Patents
Connector ferrule with filter of optical fiber and its manufactureInfo
- Publication number
- JPH02267501A JPH02267501A JP1088242A JP8824289A JPH02267501A JP H02267501 A JPH02267501 A JP H02267501A JP 1088242 A JP1088242 A JP 1088242A JP 8824289 A JP8824289 A JP 8824289A JP H02267501 A JPH02267501 A JP H02267501A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- optical fiber
- ferrule
- filter
- adhesive
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 abstract description 7
- 229910003460 diamond Inorganic materials 0.000 abstract description 3
- 239000010432 diamond Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、光ファイバのフィルタ付コネクタフェルール
の構造及びその加工製造方法に関するものであって、フ
ィルタ付コネクタフェルールのフィルタ装着のための溝
加工能率を向上させて，その製作コストの低減を図るた
めに利用して有効なものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a structure of a connector ferrule with a filter for optical fibers and a method for processing and manufacturing the same, and relates to a method for processing and manufacturing the connector ferrule with a filter. It is effective when used to improve efficiency and reduce manufacturing costs.
［従来技術及び課題］
光ファイバのコネクタのフェルールにフィルタを装着し
て．光ファイバを通る光の波長を選別するものが従来公
知である．この従来技術におけるフェルールは第４図，
第５図に示す構造を有している．この従来のフェルール
の構造及びフィルタ装着のための溝加工方法の概略を第
４図，第５図を参照しつつ説明する。[Prior art and issues] Attaching a filter to the ferrule of an optical fiber connector. There are conventionally known devices that select the wavelength of light passing through an optical fiber. The ferrule in this conventional technology is shown in Figure 4.
It has the structure shown in Figure 5. The structure of this conventional ferrule and the method of forming a groove for attaching a filter will be outlined with reference to FIGS. 4 and 5.
光ファイバのフェルールの構造は従来公知であり．コネ
クタはフェルールＡとその後方のフェルールＢとを有し
，両フェルールＡとＢとの間に鰐Ｆが設けられている。The structure of an optical fiber ferrule is conventionally known. The connector has a ferrule A and a ferrule B behind it, and a ferrule F is provided between both ferrules A and B.
このフェルールＢの中央部に巾すが数１０μ園の半径方
向溝１を形成し、この溝ｌにフィルタ２を挿入し、エポ
キシ系熱硬化型接着剤３を溝ｌに詰めてフィルタを溝１
内に固定している。フェルールＢの径が２，５■φであ
るとき、溝１の深さは１．５ｍｍはどである。A radial groove 1 with a width of several tens of micrometers is formed in the center of this ferrule B, a filter 2 is inserted into this groove 1, an epoxy thermosetting adhesive 3 is filled in the groove 1, and the filter is inserted into the groove 1.
It is fixed inside. When the diameter of the ferrule B is 2.5 mm, the depth of the groove 1 is 1.5 mm.
フェルールはステンレス鋼、あるいはジルコニア等の硬
質金属製である。The ferrule is made of stainless steel or a hard metal such as zirconia.
フェルールＢの中心孔に裸の光ファイバ素線４を挿入し
、接着剤３と同じ接着剤を用いてフェルールに固着する
。光ファイバ素線を挿入、固着しているフェルールＢを
ダイヤモンド砥石等の砥石によって切削加工して溝ｌを
形成する。この砥石は、この溝加工時に光ファイバ素線
を切断し、かつその切断端面を鏡面加工するものであり
、このために、その研磨面は非常に微細で、高速回転（
３０，ＯＯＯｒｐｍ）によって切削加工するものである
。したがって硬質のフェルールＢｔＩ：１．５■■の深
さまで溝加工するには相当の時間を要し。A bare optical fiber 4 is inserted into the center hole of the ferrule B, and is fixed to the ferrule using the same adhesive as the adhesive 3. A groove 1 is formed by cutting the ferrule B to which the optical fiber is inserted and fixed using a grindstone such as a diamond grindstone. This grindstone cuts the optical fiber during groove processing and mirror-finishes the cut end surface. For this reason, the polished surface is extremely fine and rotates at high speed (
30,00 rpm). Therefore, it takes a considerable amount of time to groove the hard ferrule BtI to a depth of 1.5.
加工能率が極めて悪い。Machining efficiency is extremely poor.
この問題は、研磨砥石によってフェルールを切削加工し
て溝を形成すると同時に光ファイバ素線を切断して端面
の鏡面加工を行うことに起因して生じる問題マある。こ
の問題は溝加工がファイバ素線に達する手前まで荒引砥
石で溝加工し、その後研磨砥石によって溝加工及び光フ
ァイバ素線の切断鏡面加工を行うことによって、幾分解
決されるが、溝加工が２工程加工になるので実用的でな
Ｌ’ｓ
そこで１本発明は、上記溝加工を単一加工工程で実質的
に光ファイバ素線の切断鏡面加工のみに限定できるよう
に、フェルールの構造を工夫することをその課題とする
ものである。This problem arises because the ferrule is cut with a grindstone to form a groove, and at the same time, the optical fiber is cut and the end face is mirror-finished. This problem can be solved to some extent by using a roughing grindstone to process the grooves until the grooves reach the fiber strands, and then using a polishing grindstone to process the grooves and cut the optical fiber strands to a mirror finish. Therefore, the present invention has a ferrule structure that allows the groove processing to be substantially limited to cutting and mirror-finishing the optical fiber strand in a single processing step. The task is to devise ways to do so.
［課題を解決するための手段］
上記課題解決のために講じた手段は次の要素（イ）〜（
ハ）によって構成される。[Means to solve the problem] The measures taken to solve the above problem are the following elements (a) to (
c).
（イ）フェルールに予め巾広の半径方向溝を形成するこ
と。(b) Form a wide radial groove in the ferrule in advance.
（ロ）フェルールに光ファイバ素線を挿入し接着剤で固
着するとともに上記巾広の半径方向溝に接着剤を充填し
て硬化させること。(b) Inserting an optical fiber into the ferrule and fixing it with an adhesive, and filling the wide radial groove with the adhesive and curing it.
（ハ）巾広の半径方向溝を埋めている接着剤の中央部分
にフィルタ装着用半径方向溝を形成し、この溝の研削加
工によって光ファイバ素線を切断鏡面加工すること。(c) A radial groove for attaching a filter is formed in the center of the adhesive filling the wide radial groove, and the optical fiber is cut to a mirror finish by grinding this groove.
［作 用］
フェルールＢの形成加工工程において巾広の溝加工が行
われており、ファイバ素線を挿入して接着固定するとき
に巾広溝は接着剤によって埋められている。したがって
フィルタ装着のための溝加工においては、研磨砥石によ
って１１広の溝を埋めている接着剤を研削し、これと同
時に光ファイバ素線の切断鏡面加工がなされる。接着剤
に対する研削溝加工は、硬化した接着剤が軟かいのでほ
とんど無負荷で、極めて速やかに行われる。したがって
研削砥石による研削加工は実質的に光ファイバ素線の切
断鏡面加工のみになる。[Function] A wide groove is formed in the process of forming the ferrule B, and the wide groove is filled with adhesive when the fiber wire is inserted and fixed with adhesive. Therefore, in the groove machining for attaching the filter, the adhesive filling the 11 wide grooves is ground with a grinding wheel, and at the same time, the optical fiber is cut to a mirror finish. Since the hardened adhesive is soft, grinding grooves on the adhesive can be done extremely quickly with almost no load. Therefore, the grinding process using the grinding wheel is essentially only cutting and mirror-finishing the optical fiber strand.
なお巾広溝の深さについては、フィルタ挿入用溝の深さ
と同等とすることが好ましいが、幾分浅目であっても１
課題解決の稈度は幾分小さくなるとしでも、十分である
。The depth of the wide groove is preferably the same as the depth of the filter insertion groove, but even if it is somewhat shallow,
Even if the degree of culm for solving the problem is somewhat smaller, it is sufficient.
このようにして作られたフェルールは次のとおりの構造
を有する。The ferrule thus made has the following structure.
（１）接着剤が詰められている巾広の半径方向溝を有す
ること。(1) Having a wide radial groove filled with adhesive.
（２）フィルタが内装され、接着剤が詰められている巾
広溝内の巾狭溝を有すること。(2) It has a narrow groove within the wide groove in which the filter is housed and filled with adhesive.
［実 施 例］
本発明の一実施例を第１図、第２図を参照しつつ説明す
る。[Example] An example of the present invention will be described with reference to FIGS. 1 and 2.
外径２，５■■φのフェルールＢの中央部に巾Ｔが０．
５ｍｍの巾広の半径方向溝１０を荒引き切削加工によっ
て形成する。この溝の深さを１．５ｍｓ＋とする。A width T of 0.0 mm is placed in the center of a ferrule B with an outer diameter of 2.5 mm.
A 5 mm wide radial groove 10 is formed by rough cutting. The depth of this groove is assumed to be 1.5 ms+.
フェルールＢの中心孔に光ファイバ素線４を挿入し、接
着剤によって接着するとき、 ｒｌｌ広溝１０に接着剤
３′を充填して硬化させる。その後、接着剤３′の中央
部に巾狭溝１１を研磨砥石によって形成する。このとき
同研磨砥石によって光ファイバ素線４を切断し、その端
面を鏡面加工する。When inserting the optical fiber 4 into the center hole of the ferrule B and bonding it with an adhesive, the rll wide groove 10 is filled with the adhesive 3' and cured. Thereafter, a narrow groove 11 is formed in the center of the adhesive 3' using a grindstone. At this time, the optical fiber 4 is cut using the same polishing wheel, and its end face is polished to a mirror finish.
この巾狭溝１１は従来技術における溝ｌと同等のもので
あり、その巾ｔは数１０μｌである。This narrow groove 11 is equivalent to the groove 1 in the prior art, and its width t is several tens of microliters.
巾狭溝１１にフィルタ２を内装し、接着剤３を充填して
埋めて、フィルタ２を接着剤３′及び光ファイバ素線４
に固定する。The filter 2 is placed inside the narrow groove 11, filled with an adhesive 3, and the filter 2 is bonded to the adhesive 3' and the optical fiber strand 4.
Fixed to.
なお、「ＩＪ広溝の断面形状は第３図に示すように矩形
、７字形、Ｕ字形でもよい。Note that the cross-sectional shape of the IJ wide groove may be rectangular, 7-shaped, or U-shaped as shown in FIG.
［効 果］
上記の発明の課題は新規である。したがってこの課題を
解決して、従来技術における前述の問題を解消したこと
自体が本発明特有の効果である。[Effect] The problem of the above invention is new. Therefore, solving this problem and eliminating the above-mentioned problems in the prior art is itself an effect unique to the present invention.
さらに、ダイヤモンド砥石等の伊磨砥石による硬質物の
研削加工が実質的に光ファイバ素線に限定されるので、
１つのフェルールの溝加工による砥石の摩耗が従来の場
合に比して無視し得る程度に小さくなる。このことは研
磨砥石による硬質物に対する加工表面積の比が無視しう
る程度に小さくなることから明らかである。したがって
、砥石の摩耗に伴う加工能率の低下がほとんどなく、同
一砥石の供用時間も著しく増大するという特有の効果を
有する。Furthermore, since grinding of hard materials using an Ima grindstone such as a diamond grindstone is essentially limited to optical fiber strands,
The wear of the grindstone due to the groove machining of one ferrule becomes negligible compared to the conventional case. This is clear from the fact that the ratio of the surface area processed by the grinding wheel to the hard material becomes negligibly small. Therefore, it has the unique effect that there is almost no reduction in machining efficiency due to wear of the grindstone, and the service time of the same grindstone is significantly increased.
第１図は本発明の実施例の側面図、第２図は第１図の一
部拡大断面図、第３図は巾広溝の各実施態様の断面図、
第４図は従来のフェルールの側面図、第５図は第４図の
一部拡大断面図である。
図中、ｌ・・・溝、２・・・フィルタ、３・・・接着剤
、３′ ・・・接着剤、４・・・光ファイバ素線、１０
・・・巾広溝、１１・・・１］狭溝。
Ａ、Ｂ・・・フェルール、Ｆ・・・鍔、Ｔ・・・巾広溝
の巾、ｂ・・・＋ｌＪ狭溝の巾 である。FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of FIG. 1, and FIG. 3 is a sectional view of each embodiment of the wide groove.
FIG. 4 is a side view of a conventional ferrule, and FIG. 5 is a partially enlarged sectional view of FIG. 4. In the figure, l... Groove, 2... Filter, 3... Adhesive, 3'... Adhesive, 4... Optical fiber wire, 10
...Wide groove, 11...1] Narrow groove. A, B...ferrule, F...tsuba, T...width of wide groove, b...+lJ width of narrow groove.
Claims (3)
いて、フェルールに光ファイバ素線を挿入し接着剤で固
着するとともに上記巾広の半径方向溝に接着剤を充填し
て硬化させ、巾広の半径方向溝を埋めている接着剤の中
央部分にフィルタ装着用半径方向溝を形成し、この溝の
研削加工によって光ファイバ素線を切断鏡面加工し、こ
のフィルタ装着溝にフィルタを挿入接着した光ファイバ
のフィルタ付コネクタフェルールの製造方法。(1) A wide radial groove is formed in the ferrule in advance, an optical fiber is inserted into the ferrule and fixed with adhesive, and the wide radial groove is filled with adhesive and cured. A radial groove for attaching a filter is formed in the center of the adhesive filling the wide radial groove, the optical fiber is cut to a mirror finish by grinding this groove, and a filter is attached to the groove for attaching the filter. A method for manufacturing a connector ferrule with a filter for inserted and bonded optical fibers.
ィルタが内装され、接着剤が詰められている巾広溝内の
巾狭溝とを有する光ファイバのフィルタ付コネクタフェ
ルール。(2) An optical fiber connector ferrule with a filter having a wide radial groove filled with adhesive and a narrow groove inside the wide groove containing a filter and filled with adhesive.
載の光ファイバのフィルタ付コネクタフェルール。(3) The optical fiber connector ferrule with a filter according to claim 2, wherein the depth of the narrow groove is equal to the depth of the wide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1088242A JP2893268B2 (en) | 1989-04-08 | 1989-04-08 | Zirconia connector ferrule with optical fiber filter connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1088242A JP2893268B2 (en) | 1989-04-08 | 1989-04-08 | Zirconia connector ferrule with optical fiber filter connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02267501A true JPH02267501A (en) | 1990-11-01 |
| JP2893268B2 JP2893268B2 (en) | 1999-05-17 |
Family
ID=13937394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1088242A Expired - Fee Related JP2893268B2 (en) | 1989-04-08 | 1989-04-08 | Zirconia connector ferrule with optical fiber filter connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2893268B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0511139A (en) * | 1991-07-04 | 1993-01-19 | Fujikura Ltd | Filter-containing connector |
| JP2002261300A (en) * | 2000-12-25 | 2002-09-13 | Sumitomo Electric Ind Ltd | Light receiver |
| WO2003032032A1 (en) * | 2001-10-04 | 2003-04-17 | Matsushita Electric Industrial Co., Ltd. | Optical filter module, and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179803A (en) * | 1981-04-30 | 1982-11-05 | Fujitsu Ltd | Light attenuator |
| JPS6314202U (en) * | 1986-07-14 | 1988-01-29 |
-
1989
- 1989-04-08 JP JP1088242A patent/JP2893268B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179803A (en) * | 1981-04-30 | 1982-11-05 | Fujitsu Ltd | Light attenuator |
| JPS6314202U (en) * | 1986-07-14 | 1988-01-29 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0511139A (en) * | 1991-07-04 | 1993-01-19 | Fujikura Ltd | Filter-containing connector |
| JP2002261300A (en) * | 2000-12-25 | 2002-09-13 | Sumitomo Electric Ind Ltd | Light receiver |
| WO2003032032A1 (en) * | 2001-10-04 | 2003-04-17 | Matsushita Electric Industrial Co., Ltd. | Optical filter module, and manufacturing method thereof |
| US7044649B2 (en) | 2001-10-04 | 2006-05-16 | Matsushita Electric Industrial Co., Ltd. | Optical filter module, and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2893268B2 (en) | 1999-05-17 |
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