WO2015076097A1 - 光学特性の測定用機器 - Google Patents

光学特性の測定用機器 Download PDF

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Publication number
WO2015076097A1
WO2015076097A1 PCT/JP2014/079232 JP2014079232W WO2015076097A1 WO 2015076097 A1 WO2015076097 A1 WO 2015076097A1 JP 2014079232 W JP2014079232 W JP 2014079232W WO 2015076097 A1 WO2015076097 A1 WO 2015076097A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
insertion loss
light
optical
measurement
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.)
Ceased
Application number
PCT/JP2014/079232
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English (en)
French (fr)
Japanese (ja)
Inventor
小林　茂
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.)
Tyco Electronics Japan GK
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Tyco Electronics Japan GK
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 Tyco Electronics Japan GK filed Critical Tyco Electronics Japan GK
Priority to CN201480063352.XA priority Critical patent/CN105723199A/zh
Priority to EP14863964.4A priority patent/EP3073242A4/en
Publication of WO2015076097A1 publication Critical patent/WO2015076097A1/ja
Priority to US15/156,553 priority patent/US20160258840A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • 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
    • G02B6/26—Optical coupling means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Definitions

  • the present invention relates to an apparatus suitable for measuring the optical characteristics of optical fiber parts represented by optical connectors.
  • An optical fiber is classified into a multi-mode optical fiber that passes a plurality of modes and a single-mode optical fiber that passes only a single mode.
  • Multimode optical fibers are classified into step index (SI) type optical fibers with a uniform refractive index distribution in the core and graded index (GI) type optical fibers with a slowly changing refractive index distribution in the core.
  • SI step index
  • GI graded index
  • SI type optical fibers are widely used in the industrial field and the automotive field.
  • JIS C 6823 defines the insertion loss test method for multimode optical fibers themselves, including SI type optical fibers.
  • this loss test method is based on the premise that a sufficiently long optical fiber is used.
  • the optical characteristics including the insertion loss as well as the optical fiber components necessary for configuring the optical transmission line including the optical fiber, for example, the optical connector.
  • the insertion loss of optical connectors used in SI type optical fibers is specified in JIS C 5961. However, even if the measurement is performed in accordance with JIS C 5961, the result may be different every time it is measured, and the reproducibility of the measurement result is often not obtained. Measurement is usually performed by making measurement light incident on an optical fiber connected to an optical connector. This is because the state of light distribution in the optical fiber is not necessarily the same every time measurement is performed. .
  • a plastic clad multimode optical fiber requires a length of 2 km or more.
  • a commercially available optical fiber has a length of about several hundred meters at the most, it is practically difficult to perform measurement by steady mode excitation.
  • the present invention has been made on the basis of such a technical problem, and provides an optical characteristic measuring instrument that can obtain a measurement result of insertion loss with good reproducibility without using a long optical fiber. With the goal.
  • the optical characteristic measuring instrument of the present invention includes a light source that emits measurement light, an optical fiber on which the measurement light is incident from one end side, comprising an emitting end connected to the other end, and that the number of openings insertion loss L beta corresponding to the insertion loss L alpha due to the static mode excitation of optical fiber is obtained NA beta of the measurement light is incident on the optical fiber It is characterized by. According to the study of the present inventors, it is proportional to the NA (numerical aperture) of the insertion loss in the lunch connector L beta measurement light (incident light). Therefore, by using this characteristic and using an NA that provides an insertion loss L ⁇ that matches the insertion loss L ⁇ due to steady mode excitation, the light distribution state due to steady mode excitation can be reproduced in an optical fiber. The present inventors paid attention to.
  • the numerical aperture NA ⁇ is such that the insertion loss L ⁇ matches the insertion loss L ⁇ in order to reproduce the light distribution state by steady mode excitation in the optical fiber.
  • it may be set the numerical aperture NA beta in the range.
  • the measurement device of the present invention described above When the measurement device of the present invention described above is used for measurement and the measurement light having the numerical aperture NA ⁇ is incident on the optical fiber, the insertion loss L ⁇ equivalent to the light distribution state by steady mode excitation is obtained. The distribution state of light that can be measured can be reproduced on an optical fiber.
  • the measuring instrument of the present invention without using a long optical fiber, since the distribution of light that can be measured the insertion loss L beta and distribution of light by the steady mode excitation can be reproduced in the optical fiber Measurement results of optical characteristics and insertion loss can be obtained with good reproducibility.
  • the measuring apparatus in this embodiment is shown, (a) shows the outline structure, (b), (c) has shown the outline
  • the modification of the measuring apparatus in this embodiment is shown. It is an experimental result which shows that NA of incident light and the insertion loss L ( beta) in a launch connector have a proportional relationship. It is a table
  • FIG. 5 is a diagram illustrating the example of FIG. 4 on the configuration of a measuring device.
  • the measuring device 1 for measuring optical characteristics of an optical fiber component includes a light source module 2, an optical fiber 7 connected at one end to the light source module 2, and the other end of the optical fiber 7. And a launch connector 9 to which the side is connected.
  • the measuring device 1 irradiates the measurement connector DL from the light source module 2 toward the optical connector 10 with the optical connector 10 to be measured attached to the launch connector 9.
  • the intensity P 1 of the measurement light DL passing through the optical connector 10 is measured.
  • the intensity P 0 of the measurement light DL emitted from the launch connector 9 is measured in a single state of the measuring device 1 without the optical connector 10 attached thereto. From the measured intensity P 1 and intensity P 0 , the measurement result of the insertion loss of the optical connector 10 can be obtained.
  • the intensities P 0 and P 1 of the measurement light DL are measured by the optical power meter 11 as shown in FIG.
  • the optical power meter 11 a heat conversion type or a photoelectric conversion type is generally used as a measurement principle, but any of them may be used.
  • the light source module 2 includes a light source 3, an optical system 4 that efficiently guides the measurement light DL emitted from the light source 3, and a ferrule 5 to which one end side of the optical fiber 7 is fixed, for example.
  • the light source 3 can be a laser diode or a light emitting diode as a stabilizing light source, but is not limited to this, and a white light source using a halogen lamp or the like can also be used.
  • the optical system 4 includes one or a plurality of optical lenses.
  • the insertion loss L ⁇ was actually measured using the measurement light DL emitted from the launch connector 9 of the measurement device 1.
  • the insertion loss is measured using the measuring device 1 including the optical fiber 7 and the launch connector 9. This measurement is performed by changing the NA of the light incident on the optical fiber 7 for each type of the optical fiber 7.
  • measurement data (L ⁇ ) corresponding to the NA of light and the insertion loss can be obtained for each type of optical fiber 7.
  • the NA of the incident light that can reproduce the light distribution state equivalent to the light by the steady mode excitation in the measuring device 1 is specified.
  • the NA of optical fiber X is 0.43
  • optical fiber Y is 0.35
  • optical fiber Z is 0.58
  • the corresponding type of optical fiber 7 is used in the measuring instrument 1. It is shown that the state of light distribution equivalent to light by steady mode excitation can be reproduced.
  • the NA capable of reproducing the light distribution state equivalent to the light by the steady mode excitation is hereinafter referred to as a reproduction NA.
  • the reproduction NA is not limited to 0.43 in the case of the optical fiber X, but can be determined in consideration of variations as described above.
  • the incident light of the measuring device 1 is adjusted so as to have the reproduction NA. For example, as shown in FIG. 5, if the measuring device 1 uses the optical fiber X as the optical fiber 7, the NA of the incident light is set to 0.43. Similarly, the incident of the measuring device 1 using the optical fiber Y is incident. The NA of light is set to 0.36, and the NA of incident light of the measuring instrument 1 using the optical fiber X is set to 0.58.
  • the measuring device 1 produced by the above procedure has the following requirements. That is, the measuring device 1 is configured such that NA light that provides an insertion loss L ⁇ corresponding to the insertion loss L ⁇ of the optical fiber 7 due to steady mode excitation is incident on the optical fiber 7. The measuring device 1 can reproduce a state of light distribution equivalent to light by steady mode excitation. Therefore, according to the measuring instrument 1 of the present embodiment, the insertion loss measurement result can be obtained with good reproducibility without using a long optical fiber.
  • the measurement target is not limited to optical connectors, but various components related to optical fibers that require measurement of optical characteristics, such as splitters, combiners, demultiplexers, and SI-type embedded waveguides are measured. Can be the target of.
  • the fields in which these optical components are used are not limited, and can be applied to various fields such as industrial fields, automobile fields, and aerospace fields.
  • the insertion loss is the measurement target of the optical characteristics, but the present invention is not limited to this.
  • the present invention has a feature that it can reproduce a light distribution state equivalent to light by steady mode excitation even with a short optical fiber, and optical characteristics that can be measured using this feature, For example, the return loss can be measured.
  • a plug 6 that can be attached to and detached from the light source module 2 can be used instead of the fixed ferrule 5 shown in FIG.
  • a launch connector 9 is connected to the plug 6 at the other end.
  • an exciter 8 can be provided in the middle of the optical fiber 7.
  • the state of light in the optical fiber 7 can be adjusted to a desired distribution shape, so that the measurement result can be obtained more stably.
  • a mode filter that excludes light unnecessary for measurement can be provided in the middle of the optical fiber 7.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
PCT/JP2014/079232 2013-11-19 2014-11-04 光学特性の測定用機器 Ceased WO2015076097A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480063352.XA CN105723199A (zh) 2013-11-19 2014-11-04 光学特性的测定用设备
EP14863964.4A EP3073242A4 (en) 2013-11-19 2014-11-04 Device for measuring optical properties
US15/156,553 US20160258840A1 (en) 2013-11-19 2016-05-17 Device for Measuring Optical Properties

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013238489A JP6162028B2 (ja) 2013-11-19 2013-11-19 光学特性の測定用機器
JP2013-238489 2013-11-19

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/156,553 Continuation US20160258840A1 (en) 2013-11-19 2016-05-17 Device for Measuring Optical Properties

Publications (1)

Publication Number Publication Date
WO2015076097A1 true WO2015076097A1 (ja) 2015-05-28

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PCT/JP2014/079232 Ceased WO2015076097A1 (ja) 2013-11-19 2014-11-04 光学特性の測定用機器

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US (1) US20160258840A1 (enExample)
EP (1) EP3073242A4 (enExample)
JP (1) JP6162028B2 (enExample)
CN (1) CN105723199A (enExample)
WO (1) WO2015076097A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12034476B2 (en) * 2021-01-08 2024-07-09 Panduit Corp. Apparatus and methods for an optical multimode channel bandwidth analyzer

Citations (9)

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JPS54101336A (en) * 1978-01-26 1979-08-09 Nippon Telegr & Teleph Corp <Ntt> Steady mode exciter
JPS57116234A (en) * 1981-01-12 1982-07-20 Nippon Telegr & Teleph Corp <Ntt> Measuring method for photo loss
JPS60127443A (ja) * 1983-10-25 1985-07-08 レイケム・コ−ポレイシヨン 光フアイバスプライスにおける減衰を求める方法および装置
JPH0540074A (ja) * 1991-08-05 1993-02-19 Nippon Telegr & Teleph Corp <Ntt> 光コネクタの反射減衰量の検査方法および装置
JPH0530751U (ja) * 1991-09-30 1993-04-23 アンリツ株式会社 入射ｎａ変換装置
JPH06186460A (ja) * 1992-12-21 1994-07-08 Ando Electric Co Ltd マルチモード光ファイバ損失試験用ｌｄモジュール
JP2006038647A (ja) * 2004-07-27 2006-02-09 Sumitomo Electric Ind Ltd Ｏｔｄｒ測定方法
JP2007046973A (ja) 2005-08-09 2007-02-22 Nippon Telegr & Teleph Corp <Ntt> 励振装置および励振方法
JP2007057492A (ja) * 2005-08-26 2007-03-08 Nippon Telegr & Teleph Corp <Ntt> マルチモード光導波路の励振方法

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US4165496A (en) * 1977-12-16 1979-08-21 Bell Telephone Laboratories, Incorporated Optical fiber light tap
US4220411A (en) * 1978-08-14 1980-09-02 The United States Of America As Represented By The Secretary Of The Navy Fiber optic light launching assembly
US4281925A (en) * 1979-07-31 1981-08-04 Bowmar/Ali, Inc. Fiber optic attenuation simulator
DE3327668A1 (de) * 1983-07-30 1985-02-07 Udo Dr Ing Unrau Anordnung zur selektiven modenanregung oder modenanalyse in gradientenfasern
US4685799A (en) * 1986-01-13 1987-08-11 The United States Of America As Represented By The Secretary Of The Navy Integrated optical time domain reflectometer/insertion loss measurement system
US6177985B1 (en) * 1996-10-01 2001-01-23 Cary Bloom Apparatus and method for testing optical fiber system components
US6963062B2 (en) * 2003-04-07 2005-11-08 Eksigent Technologies, Llc Method for multiplexed optical detection including a multimode optical fiber in which propagation modes are coupled
GB2405488B (en) * 2003-08-27 2005-08-03 Meonics Ltd Device for controlling the mode distribution in multimode optical fibre
CN101793600B (zh) * 2010-04-15 2011-04-20 上海交通大学 光纤传输损耗系数测量装置及测量方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54101336A (en) * 1978-01-26 1979-08-09 Nippon Telegr & Teleph Corp <Ntt> Steady mode exciter
JPS57116234A (en) * 1981-01-12 1982-07-20 Nippon Telegr & Teleph Corp <Ntt> Measuring method for photo loss
JPS60127443A (ja) * 1983-10-25 1985-07-08 レイケム・コ−ポレイシヨン 光フアイバスプライスにおける減衰を求める方法および装置
JPH0540074A (ja) * 1991-08-05 1993-02-19 Nippon Telegr & Teleph Corp <Ntt> 光コネクタの反射減衰量の検査方法および装置
JPH0530751U (ja) * 1991-09-30 1993-04-23 アンリツ株式会社 入射ｎａ変換装置
JPH06186460A (ja) * 1992-12-21 1994-07-08 Ando Electric Co Ltd マルチモード光ファイバ損失試験用ｌｄモジュール
JP2006038647A (ja) * 2004-07-27 2006-02-09 Sumitomo Electric Ind Ltd Ｏｔｄｒ測定方法
JP2007046973A (ja) 2005-08-09 2007-02-22 Nippon Telegr & Teleph Corp <Ntt> 励振装置および励振方法
JP2007057492A (ja) * 2005-08-26 2007-03-08 Nippon Telegr & Teleph Corp <Ntt> マルチモード光導波路の励振方法

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Title
See also references of EP3073242A4

Also Published As

Publication number Publication date
CN105723199A (zh) 2016-06-29
EP3073242A4 (en) 2017-06-28
EP3073242A1 (en) 2016-09-28
JP2015099066A (ja) 2015-05-28
US20160258840A1 (en) 2016-09-08
JP6162028B2 (ja) 2017-07-12

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