WO2015189965A1 - ファイバカップリングモジュール - Google Patents
ファイバカップリングモジュール Download PDFInfo
- Publication number
- WO2015189965A1 WO2015189965A1 PCT/JP2014/065636 JP2014065636W WO2015189965A1 WO 2015189965 A1 WO2015189965 A1 WO 2015189965A1 JP 2014065636 W JP2014065636 W JP 2014065636W WO 2015189965 A1 WO2015189965 A1 WO 2015189965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- fiber cable
- light source
- light
- wavelength band
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/385—Accessories for testing or observation of connectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3895—Dismountable connectors, i.e. comprising plugs identification of connection, e.g. right plug to the right socket or full engagement of the mating parts
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
- G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4256—Details of housings
- G02B6/4257—Details of housings having a supporting carrier or a mounting substrate or a mounting plate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4286—Optical modules with optical power monitoring
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
-
- 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
- G01M11/08—Testing mechanical properties
- G01M11/088—Testing mechanical properties of optical fibres; Mechanical features associated with the optical testing of optical fibres
Definitions
- the present invention relates to a fiber coupling module including an optical fiber connector that can be attached and detached by a user.
- a method for monitoring unconnected (for example, poor connection) of an optical fiber cable to an optical fiber connector is known.
- a light source such as a light emitting diode (LED) or a laser diode (LD) is used to monitor the change in the output of the light detection sensor depending on the presence or absence of an optical fiber connector (Patent Document 1).
- a laser light absorbing medium is disposed behind the optical fiber connector, and when the optical fiber connector is not connected to the optical fiber cable, the temperature of the laser light absorbing medium disposed on the optical axis interlocked with the shutter or the like increases. Monitor the connection status of the optical fiber cable.
- Patent Document 2 describes that the reflected light from the end face of the optical fiber is received and the presence or absence of connection of the optical fiber is detected based on the received light power.
- the connection state of the optical fiber cable Monitoring is necessary for safety.
- connection state of the optical fiber cable is monitored outside the fiber coupling module.
- a sensor or the like is disposed in the vicinity of the optical fiber connector, resulting in difficulty in handling, an increase in the shape or complexity of the apparatus, and an associated increase in cost.
- both the laser light source and the optical system of the monitoring system must take into account the characteristics such as the wavelength and output.
- An object of the present invention is to provide a fiber coupling module having an optical fiber connector to which an optical fiber cable can be attached and detached, and capable of monitoring the connection state of the optical fiber cable inside the module.
- the fiber coupling module according to the present invention has a second wavelength excluding light in the first wavelength band by setting a reflectance for light in the first wavelength band to be less than a predetermined value.
- a coupling module comprising: a main light source that outputs light of the first wavelength band to the optical fiber cable; an auxiliary light source that outputs light of the second wavelength band to the optical fiber cable; and the optical fiber A detection unit that detects a connection state of the optical fiber cable to the optical fiber connector based on light of the second wavelength band reflected from the end face of the cable Equipped with a.
- the light of the second wavelength band from the auxiliary light source is reflected by the low reflection film using the low reflection film applied to the end face of the optical fiber cable, and the second wavelength band is reflected by the detection unit.
- a connection state of the optical fiber cable to the optical fiber connector is detected based on the light. Therefore, the connection state of the optical fiber cable can be monitored inside the fiber coupling module having the optical fiber connector.
- FIG. 1 is a diagram showing a configuration of a fiber coupling module according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing the reflectance characteristics with respect to the wavelength of the low reflection film applied to the fiber end face according to the first embodiment of the present invention.
- FIG. 3 is a diagram showing the reflectance characteristics with respect to the wavelength of the actual broadband low-reflection film applied to the fiber end face according to the first embodiment of the present invention.
- FIG. 4 is a diagram for explaining the numerical aperture (NA) of the fiber according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing a configuration of a fiber coupling module according to Embodiment 2 of the present invention.
- the fiber coupling module according to the first embodiment of the present invention has a laser head 1 as shown in FIG.
- a semiconductor laser 2 a collimating lens 3, a focus lens 4, an optical fiber connector 5, an auxiliary light source 7, a collimating lens 8, a focus lens 9, and a sensor 10 are provided.
- the semiconductor laser 2 corresponds to the main light source of the present invention, and outputs laser light in the first wavelength band.
- the collimating lens 3 converts the laser beam from the semiconductor laser 2 into parallel light.
- the focus lens 4 condenses the parallel light from the collimating lens 3.
- the laser head 1 is coupled to an optical fiber cable 6 via an optical fiber connector 5.
- the optical fiber cable 6 is detachable by the optical fiber connector 5.
- the reflectivity of the semiconductor laser 2 with respect to the light in the first wavelength band is set to a value less than a predetermined value (for example, 0.2%) to remove the light in the first wavelength band.
- a low-reflection film (an anti-reflection coat (AR coat)) 50 is set to set the reflectance with respect to light in the wavelength band to a predetermined value or more (for example, 90%).
- FIG. 2 is a diagram showing the reflectance characteristics with respect to the wavelength of the low-reflection film 50 applied to the fiber end face according to Example 1 of the present invention.
- the reflectance of the semiconductor laser 2 with respect to the light in the first wavelength band (wavelength ⁇ 0 to ⁇ 2) is set to 0.2%, for example, and the first wavelength band except for the light in the first wavelength band is excluded.
- the reflectance with respect to light in the second wavelength band is set to 90%, for example.
- the auxiliary light source 7 outputs light in the second wavelength band to the optical fiber cable 6 and is used for monitoring the connection state of the optical fiber cable 6 or used as guide light (aiming light) depending on the wavelength.
- the collimating lens 8 changes the light in the second wavelength band from the auxiliary light source 7 into parallel light.
- the focus lens 4 condenses the parallel light from the collimating lens 8.
- the focus lens 4 collimates the light in the second wavelength band reflected by the low reflection film 50 provided on the optical fiber end face of the optical fiber cable 6.
- the focus lens 9 condenses the parallel light from the focus lens 4 and outputs it to the sensor 10.
- the sensor 10 corresponds to the detection unit of the present invention, and is based on the light in the second wavelength band reflected by the low reflection film 50 applied to the end surface of the optical fiber cable 6 through the focus lens 9. The connection state to the optical fiber connector 5 is detected.
- the first wavelength band of the semiconductor laser 2 that is, the wavelength band coupled to the optical fiber cable 6 is 630 nm to 1500 nm.
- the wavelength band used for connection monitoring of the optical fiber cable 6 is 1500 nm or more or 630 nm or less.
- Laser light having a wavelength band of 630 nm to 1500 nm from the semiconductor laser 2 is output to the focus lens 4 through the collimator lens 3.
- the focus lens 4 collects the parallel light in the wavelength band of 630 nm to 1500 nm from the collimator lens 3 and outputs it to the end face of the optical fiber cable 6. Then, most of the laser light having a wavelength band of 630 nm to 1500 nm from the focus lens 4 is output to the optical fiber cable 6.
- light of 1500 nm or more or 630 nm or less from the auxiliary light source 7 is output to the focus lens 4 through the collimator lens 8.
- the focus lens 4 condenses the light of 1500 nm or more or 630 nm or less from the collimating lens 8 and outputs it to the end face of the optical fiber cable 6.
- the low reflection film 50 applied to the end face of the optical fiber cable 6 reflects most of the light of 1500 nm or more or 630 nm or less from the focus lens 4 and guides it to the focus lens 4. For this reason, light of 1500 nm or more or 630 nm or less from the focus lens 4 is detected by the sensor 10 via the collimating lens 9.
- the sensor 10 is not less than 1500 nm or not more than 630 nm. Light is not guided. For this reason, it can be determined that an error such as disconnection of the optical fiber cable 6 has occurred.
- connection state of the optical fiber cable 6 can be monitored in the laser head 1, it is not necessary to construct a system such as a sensor outside the fiber coupling module, and the user-friendliness is improved.
- a low reflection film 50 is applied to the end face of the fiber, and the reflectance is higher on the short wavelength side and the long wavelength side than the wavelength band (first wavelength band) where the low reflection film 50 provides a low reflectance.
- the connection state of the optical fiber cable 6 can be monitored using the auxiliary light source 7 in the wavelength band (second wavelength band).
- the auxiliary light source 7 uses a light source on the long wavelength side, so that damage or the like on the fiber end face can be suppressed and a highly reliable system can be constructed.
- a visible light source may be used as the auxiliary light source 7.
- the auxiliary light source 7 can be used for monitoring the connection state of the optical fiber cable 6 and can also be used as a positioning laser beam for laser processing, that is, a guide beam.
- NA sin ⁇ , for example, 0.1 to 0.2.
- ⁇ is an angle formed between the central axis of the core 22 and the incident beam on the end face of the optical fiber.
- the low reflection film 50 applied to the end face of the optical fiber cable 6 is used, and the light in the second wavelength band from the auxiliary light source 7 is transmitted through the low reflection film 50.
- the sensor 10 detects the connection state of the optical fiber cable 6 to the optical fiber connector 5 based on the light in the second wavelength band. Therefore, the connection state of the optical fiber cable 6 can be monitored inside the fiber coupling module having the optical fiber connector 5.
- Example 2 In the case where the main light source is a high-power laser or the like and the size is increased or the laser module is constituted by a plurality of light sources, it is difficult to arrange the auxiliary light source 7 and the sensor 10 as shown in FIG.
- each of the auxiliary light source 7 and the sensor 10 is disposed at a position excluding the optical axis of the beam output from the semiconductor laser 2 as the main light source. It solves the above problem. The details will be described below.
- Example 2 a laser module 11 is used in place of the semiconductor laser 2. On the optical axis of the laser module 11, the collimating lens 3 and the focus lens 4 are disposed. The laser module 11 outputs laser light to the focus lens 4 via the collimator lens 3.
- the auxiliary light source 7 and the collimating lens 8 shown in FIG. 5 are arranged at a position rotated about 90 ° counterclockwise with respect to the auxiliary light source 7 and the collimating lens 8 shown in FIG. Between the collimating lens 8 and the focus lens 4, a dichroic mirror 12 a that is inclined approximately 45 degrees with respect to the optical axis of the auxiliary light source 7 is disposed.
- the sensor 10 and the focus lens 9 shown in FIG. 5 are arranged at a position rotated about 90 ° clockwise with respect to the sensor 10 and the focus lens 9 shown in FIG. Between the focus lens 9 and the focus lens 4, a dichroic mirror 12b that is inclined by approximately 45 degrees with respect to the axis of the sensor 10 is disposed.
- the auxiliary light source 7 and the sensor 10 are arranged on the optical axis of the laser module 11 by folding the beam of the auxiliary light source 7 with the dichroic mirrors 12a and 12b. Therefore, a space can be ensured independently of the optical axis of the laser module 11, and both the output beam and the monitoring system can be independent.
- the present invention can be applied to a laser apparatus that performs laser processing, laser treatment, and laser measurement.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
本発明の実施例1に係るファイバカップリングモジュールは、図1に示すように、レーザヘッド1を有している。このレーザヘッド1内には、半導体レーザ2、コリメートレンズ3、フォーカスレンズ4、光ファイバコネクタ5、補助光源7、コリメートレンズ8、フォーカスレンズ9、センサ10が設けられている。
主光源が高出力レーザ等でサイズが大きくなったり、複数の光源により構成されるレーザモジュールである場合には、補助光源7やセンサ10を図1に示すように配置することは困難である。
Claims (5)
- 第1の波長帯の光に対する反射率を所定値未満に設定し前記第1の波長帯の光を除く第2の波長帯の光に対する反射率を所定値以上に設定する低反射膜を端面に施した光ファイバケーブルが脱着可能な光ファイバコネクタを有し、前記光ファイバコネクタを介して前記光ファイバケーブルに結合するファイバカップリングモジュールであって、
前記第1の波長帯の光を前記光ファイバケーブルに出力する主光源と、
前記第2の波長帯の光を前記光ファイバケーブルに出力する補助光源と、
前記光ファイバケーブルの前記端面から反射されてくる前記第2の波長帯の光に基づき前記光ファイバケーブルの前記光ファイバコネクタへの接続状態を検出する検出部と、
を備えるファイバカップリングモジュール。 - 前記補助光源は、前記第1の波長帯よりも長波長の光源からなる請求項1記載のファイバカップリングモジュール。
- 前記補助光源は、可視光光源からなり、前記可視光光源は、ビームを前記光ファイバケーブルの出射端に出力する請求項1又は請求項2記載のファイバカップリングモジュール。
- 前記可視光光源のビームの少なくとも一部を前記光ファイバケーブルの開口数内に収まるように設定して、前記光ファイバケーブルの出射端に出力する請求項3記載のファイバカップリングモジュール。
- 前記補助光源及び前記検出部の各々は、前記主光源から出力されるビームの光軸を除く位置に配置される請求項1乃至請求項4のいずれか1項記載のファイバカップリングモジュール。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480078951.9A CN106461880B (zh) | 2014-06-12 | 2014-06-12 | 光纤耦合模块 |
US15/311,874 US9696501B2 (en) | 2014-06-12 | 2014-06-12 | Fiber coupling module |
JP2016527575A JP6187691B2 (ja) | 2014-06-12 | 2014-06-12 | ファイバカップリングモジュール |
PCT/JP2014/065636 WO2015189965A1 (ja) | 2014-06-12 | 2014-06-12 | ファイバカップリングモジュール |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/065636 WO2015189965A1 (ja) | 2014-06-12 | 2014-06-12 | ファイバカップリングモジュール |
Publications (1)
Publication Number | Publication Date |
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WO2015189965A1 true WO2015189965A1 (ja) | 2015-12-17 |
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PCT/JP2014/065636 WO2015189965A1 (ja) | 2014-06-12 | 2014-06-12 | ファイバカップリングモジュール |
Country Status (4)
Country | Link |
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US (1) | US9696501B2 (ja) |
JP (1) | JP6187691B2 (ja) |
CN (1) | CN106461880B (ja) |
WO (1) | WO2015189965A1 (ja) |
Families Citing this family (4)
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JP6187691B2 (ja) * | 2014-06-12 | 2017-08-30 | 株式会社島津製作所 | ファイバカップリングモジュール |
DE102018210270B4 (de) * | 2018-06-25 | 2020-01-30 | Trumpf Laser Gmbh | Lichtleiterkabel mit Claddinglichtsensor und zugehörige Justage-, Prüf- und Überwachungsvorrichtungen und Verfahren zum Überwachen eines Lichtleiterkabels |
JP6890631B2 (ja) * | 2019-06-06 | 2021-06-18 | 京セラ株式会社 | 光ファイバー給電システムの光コネクタ及び給電装置並びに光ファイバー給電システム |
TWI788076B (zh) | 2021-10-29 | 2022-12-21 | 財團法人工業技術研究院 | 光纖模組及其製法 |
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CN105700123B (zh) * | 2014-12-15 | 2019-01-18 | 爱斯福公司 | 光纤检查显微镜与功率测量系统、光纤检查尖端及其使用方法 |
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2014
- 2014-06-12 JP JP2016527575A patent/JP6187691B2/ja active Active
- 2014-06-12 CN CN201480078951.9A patent/CN106461880B/zh active Active
- 2014-06-12 US US15/311,874 patent/US9696501B2/en active Active
- 2014-06-12 WO PCT/JP2014/065636 patent/WO2015189965A1/ja active Application Filing
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JPS57164031A (en) * | 1981-04-01 | 1982-10-08 | Olympus Optical Co | Light source apparatus for endoscope |
JPS61144542A (ja) * | 1984-12-18 | 1986-07-02 | Asahi Optical Co Ltd | 伝送用フアイバ−のトラブル検出安全装置 |
JPS62196608A (ja) * | 1986-02-24 | 1987-08-31 | Asahi Optical Co Ltd | レ−ザ伝送用フアイバのトラブル検出安全装置 |
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JPS6354111U (ja) * | 1986-09-29 | 1988-04-12 | ||
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JP2004349425A (ja) * | 2003-05-21 | 2004-12-09 | Mitsubishi Electric Corp | レーザ装置 |
Also Published As
Publication number | Publication date |
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US20170082811A1 (en) | 2017-03-23 |
JPWO2015189965A1 (ja) | 2017-04-20 |
CN106461880B (zh) | 2018-05-18 |
CN106461880A (zh) | 2017-02-22 |
US9696501B2 (en) | 2017-07-04 |
JP6187691B2 (ja) | 2017-08-30 |
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