JPH0210369B2 - - Google Patents
Info
- Publication number
- JPH0210369B2 JPH0210369B2 JP55119371A JP11937180A JPH0210369B2 JP H0210369 B2 JPH0210369 B2 JP H0210369B2 JP 55119371 A JP55119371 A JP 55119371A JP 11937180 A JP11937180 A JP 11937180A JP H0210369 B2 JPH0210369 B2 JP H0210369B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- core
- measured
- optical
- 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
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
【発明の詳細な説明】
本発明は連続的に複数の光フアイバの特性を効
率よく測定できる多心光フアイバ励振装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-core optical fiber excitation device that can continuously and efficiently measure the characteristics of a plurality of optical fibers.
第１図は光フアイバの多心連続測定器の概念を
示す図である。１は光源（又はガイドフアイバ付
光源、以下同じ）、２は受光器（又はガイドフア
イバ付受光器、以下同じ）、F1，F2，……，FNは
被測定光フアイバである。多心連続測定器は、光
電力により複数本の被測定光フアイバF1，F2，
……FNを順次励振して、連続的にこれら光フア
イバの伝送損失、帯域等の特性を測定する装置で
ある。被測定光フアイバF1と光源１及び受光器
２とを軸合せつまり光信号に対して最適結合状態
に調整して所定の測定を行ない、次に光フアイバ
F1を光フアイバF2に置き換えて最適結合状態に
調整した後同様の測定を行ない、以下光フアイバ
FNまでその特性測定を行なうものである。 FIG. 1 is a diagram showing the concept of a multi-core continuous measurement device for optical fibers. 1 is a light source (or a light source with a guide fiber, hereinafter the same), 2 is a light receiver (or a light receiver with a guide fiber, the same hereinafter), and F 1 , F 2 , . . . , F N are optical fibers to be measured. Multi-fiber continuous measuring equipment uses optical power to measure multiple optical fibers F 1 , F 2 ,
...This is a device that sequentially excites FN and continuously measures the transmission loss, bandwidth, and other characteristics of these optical fibers. The optical fiber F1 to be measured, the light source 1, and the optical receiver 2 are aligned, that is, adjusted to the optimum coupling state for the optical signal, and a predetermined measurement is performed.
After replacing F 1 with optical fiber F 2 and adjusting it to the optimal coupling state, similar measurements were performed, and hereafter optical fiber F 2 was used.
The characteristics are measured up to FN .
第２図は従来の多心連続測定器における最大結
合状態に調整する方法を示す図である。３は多心
ホールダ、４は光学系、Ｐはピツチである。被測
定光フアイバF1，F2，……FNは多心連続測定器
の多心ホールダ３に各端面が光軸に垂直な一平面
Plに一致するように固定されている。これは光フ
アイバの両端つまり光源側及び受光側について行
なわれる。第２図ａに示すように光フアイバF1
がまず光源及び受光器からなる光学系４に軸合せ
されその特性が測定されると、第２図ｂに矢印で
示す移動方向に多心ホールダ３がピツチＰだけ手
動あるいはモータにより移動され光フアイバF2
の特性測定に備える。しかし、光フアイバの構造
パラメータのバラツキ、多心ホールダ３のピツチ
の工作精度、移動距離の送り誤差等のために、単
に多心ホールダ３をピツチＰだけ移動しただけで
は光学系４と被測定光フアイバとの結合状態は最
適にはならない。このため、多心ホールダ３には
光フアイバをピツチＰ移動する粗動機能に加え
て、光学系４と光フアイバとを最適結合状態にす
る微動機能が必要とされる。詳細には、ピツチＰ
は心線径より小さくすることはできないので標準
的な0.9mm径の心線ではピツチＰは２mm程度は最
小限必要であり、１０心ホールダの場合には必要
なストローク量は9Pつまり18mmとなる。他方、
微動機能は高々数十μｍのストロークがあれば十
分であり、その送り精度としてはフアイバコアが
数十μｍ程度であることを考慮すると1μｍ程度
が必要とされる。このように粗動と微動では必要
なストローク及び送り精度が全く異なる。従つ
て、多心ホールダで粗動機能と微動機能とを併わ
せ行なうことは機構的に無理がありまた経済的で
ない。例えば、微動機能を精度良く行なわせるパ
ルス駆動ステージで粗動機能を行なうとパルス駆
動ステージのストロークが著しく長くなり機構的
に困難であり、逆に粗動用の機構で微動を行なう
と時間を要し効率的でない。 FIG. 2 is a diagram showing a method of adjusting to the maximum coupling state in a conventional multi-core continuous measuring device. 3 is a multi-core holder, 4 is an optical system, and P is a pitch. The optical fibers to be measured F 1 , F 2 , ...F N are attached to the multi-core holder 3 of the multi-core continuous measuring device with each end face perpendicular to the optical axis.
Fixed to match Pl. This is done for both ends of the optical fiber, that is, the light source side and the light receiving side. Optical fiber F 1 as shown in Figure 2a
is first aligned with the optical system 4 consisting of a light source and a light receiver, and its characteristics are measured. Then, the multi-core holder 3 is moved manually or by a motor by a pitch P in the direction of movement shown by the arrow in FIG. F2
Prepare for characteristic measurement. However, due to variations in the structural parameters of the optical fibers, machining accuracy of the pitch of the multi-core holder 3, feeding errors in the moving distance, etc., simply moving the multi-core holder 3 by the pitch P will cause the optical system 4 and the measured The bonding state with the fiber is not optimal. For this reason, the multi-core holder 3 is required to have a coarse movement function for moving the optical fiber by a pitch P, as well as a fine movement function to bring the optical system 4 and the optical fiber into an optimal coupling state. For details, please refer to Pituchi P.
cannot be smaller than the core wire diameter, so for a standard 0.9 mm diameter core wire, the minimum pitch P is about 2 mm, and in the case of a 10-core holder, the required stroke amount is 9 P, or 18 mm. . On the other hand,
A stroke of several tens of micrometers at most is sufficient for the fine movement function, and considering that the fiber core is about several tens of micrometers, the feeding accuracy is required to be about 1 micrometer. In this way, the required stroke and feed accuracy are completely different between coarse movement and fine movement. Therefore, it is mechanically unreasonable and uneconomical to perform both coarse and fine movement functions with a multi-core holder. For example, if a coarse movement function is performed using a pulse drive stage that performs a fine movement function with high precision, the stroke of the pulse drive stage becomes extremely long, which is mechanically difficult.On the other hand, if a coarse movement mechanism is used to perform fine movement functions, it takes time. Not efficient.
本発明の目的は、粗動機能及び微動機能のうち
の一方を多心ホールダが有し他方を光学系が有す
るように分担した多心光フアイバ励振装置を提供
することである。 An object of the present invention is to provide a multi-core optical fiber excitation device in which a multi-core holder has one of a coarse movement function and a fine movement function and an optical system has the other.
本発明は、光を発生し被測定光フアイバに入力
する光源部及び該被測定光フアイバからの光を検
出する受光部からなる光学系と、前記光源部と受
光部との間に配置され上記光源部に結合される複
数の被測定光フアイバ入射側端面を一定のピツチ
をもつて保持する多芯ホールダと、上記受光部に
結合される複数の被測定光フアイバ出射側端面を
一定のピツチをもつて保持する多芯ホールダとを
備え、前記光に対して最適結合状態にするために
前記光源部及び受光部がそれぞれ粗動機構を備
え、前記２個の多芯ホールダが微動機構を備え、
又は、前記光に対して最適結合状態にするために
前記光源部及び受光部がそれぞれ微動機構を備
え、前記２個の多芯ホールダが粗動機構を備える
ことを特徴とする。 The present invention provides an optical system including a light source section that generates light and inputs it into the optical fiber to be measured, and a light receiving section that detects the light from the optical fiber to be measured; A multi-core holder holds the input side end faces of a plurality of optical fibers to be measured coupled to the light source part with a constant pitch, and a multicore holder holds the output side end faces of the plurality of optical fibers to be measured coupled to the light receiving part at a constant pitch. a multi-core holder for holding the light, the light source section and the light receiving section are each provided with a coarse movement mechanism in order to achieve an optimal coupling state for the light, and the two multi-core holders are provided with a fine movement mechanism;
Alternatively, the light source section and the light receiving section are each provided with a fine movement mechanism in order to achieve an optimal coupling state for the light, and the two multi-core holders are provided with a coarse movement mechanism.
以下に図面を参照して本発明について詳細に説
明する。 The present invention will be described in detail below with reference to the drawings.
第３図は本発明の多心光フアイバ励振装置の実
施例を示す図である。３は多心ホールダ、５は電
源、６はガイドフアイバ、７は光学系の移動ステ
ージ、８は発光素子、９は結合レンズである。第
３図ａは発光素子８の光電力を直接に被測定フア
イバに入力する結合系を示している。光源及び結
合レンズ９が一体化され光学系の移動ステージ７
に固定されている。被測定光フアイバF1，F2，
……，FNは多心ホールダ３に固定されている。
移動ステージ７が光フアイバを順次ピツチＰだけ
移動する粗動機能を有し、多心ホールダ３が光学
系と被測定光フアイバとを最適結合状態にする微
動機能を有するように構成されるかまたは逆に、
移動ステージ７が微動機能を有し多心ホールダ３
が粗動機能を有するように構成される。移動方向
はそれぞれ図に矢印で示した方向である。光源側
についてのみ図示したが、受光側についても同様
の移動ステージを有している。詳述すれば、光を
発生し前記被測定光フアイバに入力する光源部及
び該被測定光フアイバからの光を検出する受光部
からなる光学系の前記光源部と前記受光部との間
に配置された、上記光源部に結合される複数の被
測定光フアイバ入射側端面を一定のピツチをもつ
て保持する第１の多芯ホールダおよび上記受光部
に結合される複数の被測定光フアイバ出射側端面
を一定のピツチをもつて保持する第２の多芯ホー
ルダとを備え、前記光に対して最適結合状態にす
るために前記光源部及び受光部がそれぞれ粗動機
構を備え、前記２個の多芯ホールダが微動機構を
備え、又は、前記光に対して最適結合状態にする
ために前記光源部及び受光部がそれぞれ微動機構
を備え、前記２個の多芯ホールダが粗動機構を備
える様に構成される。第３図ｂは光源の光電力を
ガイドフアイバ６を介して移動ステージ７に導
き、被測定光フアイバに入力する結合系を示して
いる。ガイドフアイバ６の一端と結合レンズ９が
一体化されて移動ステージ７に固定される。この
例では光源を移動ステージ７から遠隔のところに
設置することができる利点がある。移動ステージ
７と多心ホールダ３とがそれぞれ独立した粗動あ
るいは微動機構を有していることは第３図ａと同
様であり、受光側にも移動ステージ７を備えてい
ることも同様である。粗動用及び微動用の移動機
構はそれぞれ従来のものを使用できるものであ
る。 FIG. 3 is a diagram showing an embodiment of the multi-core optical fiber excitation device of the present invention. 3 is a multi-core holder, 5 is a power source, 6 is a guide fiber, 7 is a moving stage of the optical system, 8 is a light emitting element, and 9 is a coupling lens. FIG. 3a shows a coupling system for directly inputting the optical power of the light emitting element 8 to the fiber to be measured. A light source and a coupling lens 9 are integrated into a moving stage 7 of an optical system.
is fixed. Optical fibers to be measured F 1 , F 2 ,
..., F N is fixed to the multi-core holder 3.
or vice versa,
The moving stage 7 has a fine movement function and the multi-core holder 3
is configured to have a coarse movement function. The moving directions are respectively indicated by arrows in the figure. Although only the light source side is illustrated, the light receiving side also has a similar moving stage. Specifically, the optical system is arranged between the light source section and the light receiving section of an optical system including a light source section that generates light and inputs it into the optical fiber to be measured, and a light receiving section that detects the light from the optical fiber to be measured. a first multi-core holder that holds the input side end faces of the plurality of optical fibers to be measured coupled to the light source section with a constant pitch, and the output side of the plurality of optical fibers to be measured coupled to the light receiving section; a second multi-core holder that holds the end faces with a constant pitch; the light source section and the light receiving section each include a coarse movement mechanism in order to achieve an optimal coupling state for the light; The multi-core holder is provided with a fine movement mechanism, or the light source section and the light receiving section are each provided with a fine movement mechanism in order to achieve an optimal coupling state for the light, and the two multi-core holders are provided with a coarse movement mechanism. It is composed of FIG. 3b shows a coupling system for guiding the optical power of the light source to the moving stage 7 via the guide fiber 6 and inputting it to the optical fiber to be measured. One end of the guide fiber 6 and the coupling lens 9 are integrated and fixed to the moving stage 7. This example has the advantage that the light source can be installed at a remote location from the moving stage 7. The fact that the moving stage 7 and the multi-core holder 3 each have an independent coarse movement or fine movement mechanism is the same as in FIG. 3a, and the fact that the light receiving side is also provided with the moving stage 7 is the same. . Conventional moving mechanisms can be used for coarse movement and fine movement, respectively.
このように光学系と多心ホールダとにそれぞれ
粗動機能と微動機能との一方を分担して持たせる
ことにより装置が機構的に簡単化でき経済的であ
り、また作業効率も改善されるので迅速に特性の
測定を行なうことができる。 In this way, by providing the optical system and the multi-core holder with a coarse movement function and a fine movement function, respectively, the device is mechanically simplified and economical, and work efficiency is also improved. Characteristics can be measured quickly.
更に、本発明は多心光フアイバ励振装置におい
て光学系と多心ホールダとにそれぞれ粗動機能と
微動機能との一方を分担させることにより、高精
度が要求される微動機構のストロークを小さくで
き微動機構の設計が容易となり、更に作業効率を
著しく改善でき、しかも粗及び微動機構を一方に
負担させた場合に比較してステージが２段構成に
ならず機構的に複雑とならず、製造コストも安価
となる等の効果を有する。 Furthermore, the present invention allows the optical system and the multi-core holder to each share one of the coarse movement function and the fine movement function in the multi-core optical fiber excitation device, thereby making it possible to reduce the stroke of the fine movement mechanism that requires high precision. The design of the mechanism is easier, and work efficiency can be significantly improved.Moreover, compared to when the coarse and fine movement mechanisms are burdened on one side, the stage does not have a two-stage configuration, making it less mechanically complex, and manufacturing costs are also reduced. It has effects such as being inexpensive.
第１図は光フアイバの多心連続測定器の概念を
示す図、第２図は従来の多心連続測定器における
最大結合状態に調整する方法を示す図、第３図は
本発明の多心光フアイバ励振装置の実施例を示す
図である。
１：光源、２：受光器、３：多心ホールダ、
５：電源、６：ガイドフアイバ、７：移動ステー
ジ、８：発光素子、９：結合レンズ、F1，F2…
FN：光フアイバ、Ｐ：ピツチ。
Fig. 1 is a diagram showing the concept of a multi-fiber continuous measuring device for optical fibers, Fig. 2 is a diagram showing a method for adjusting to the maximum coupling state in a conventional multi-fiber continuous measuring device, and Fig. 3 is a diagram showing a method for adjusting the maximum coupling state in a conventional multi-fiber continuous measuring device. It is a figure showing an example of an optical fiber excitation device. 1: light source, 2: light receiver, 3: multi-core holder,
5: Power supply, 6: Guide fiber, 7: Moving stage, 8: Light emitting element, 9: Coupling lens, F 1 , F 2 ...
F N : Optical fiber, P: Pitch.
Claims (1)
部及び該被測定光フアイバからの光を検出する受
光部からなる光学系と、前記光源部と受光部との
間に配置され上記光源部に結合される複数の被測
定光フアイバ入射側端面を一定のピツチをもつて
保持する多芯ホールダと、上記受光部に結合され
る複数の被測定光フアイバ出射側端面を一定のピ
ツチをもつて保持する多芯ホールダとを備え、 前記光に対して最適結合状態にするために前記
光源部及び受光部がそれぞれ粗動機構を備え、前
記２個の多芯ホールダが微動機構を備え、又は、
前記光に対して最適結合状態にするために前記光
源部及び受光部がそれぞれ微動機構を備え、前記
２個の多芯ホールダが粗動機構を備えることを特
徴とする多芯光フアイバ結合装置。[Scope of Claims] 1. An optical system consisting of a light source section that generates light and inputs it into the optical fiber to be measured, and a light receiving section that detects the light from the optical fiber to be measured, and between the light source section and the light receiving section. A multi-core holder that holds the input side end faces of a plurality of optical fibers to be measured which are arranged and coupled to the light source section with a constant pitch, and a multi-core holder that holds the output side end faces of the plurality of optical fibers to be measured that are coupled to the light receiving section at a constant pitch. and a multi-core holder that holds the light at a pitch of 100 to 100 mm, the light source section and the light receiving section each have a coarse movement mechanism in order to achieve an optimal coupling state for the light, and the two multi-core holders have a fine movement mechanism. or,
A multi-core optical fiber coupling device, characterized in that the light source section and the light receiving section are each provided with a fine movement mechanism in order to achieve an optimal coupling state for the light, and the two multi-core holders are provided with a coarse movement mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937180A JPS5744831A (en) | 1980-08-29 | 1980-08-29 | Device for exciting multiple core optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937180A JPS5744831A (en) | 1980-08-29 | 1980-08-29 | Device for exciting multiple core optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5744831A JPS5744831A (en) | 1982-03-13 |
| JPH0210369B2 true JPH0210369B2 (en) | 1990-03-07 |
Family
ID=14759840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11937180A Granted JPS5744831A (en) | 1980-08-29 | 1980-08-29 | Device for exciting multiple core optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5744831A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113130A (en) * | 1984-06-29 | 1986-01-21 | Mitsubishi Rayon Co Ltd | Inspector for optical fiber assembly |
| JPS62165140A (en) * | 1986-01-17 | 1987-07-21 | Sumitomo Electric Ind Ltd | How to measure optical fiber |
| EP0582831B1 (en) * | 1992-07-30 | 1998-03-18 | Siemens Aktiengesellschaft | Procedure and device for making measurements on optical waveguides |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414554U (en) * | 1977-07-02 | 1979-01-30 | ||
| JPS554457U (en) * | 1978-06-23 | 1980-01-12 |
-
1980
- 1980-08-29 JP JP11937180A patent/JPS5744831A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5744831A (en) | 1982-03-13 |
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