JP5823448B2 - 増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器 - Google Patents

増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器 Download PDF

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Publication number
JP5823448B2
JP5823448B2 JP2013131069A JP2013131069A JP5823448B2 JP 5823448 B2 JP5823448 B2 JP 5823448B2 JP 2013131069 A JP2013131069 A JP 2013131069A JP 2013131069 A JP2013131069 A JP 2013131069A JP 5823448 B2 JP5823448 B2 JP 5823448B2
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core
optical fiber
amplification
core optical
multicore
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Japanese (ja)
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JP2015005667A5 (https=
JP2015005667A (ja
Inventor
忠隈　昌輝
昌輝 忠隈
幸一 前田
幸一 前田
幸寛 土田
幸寛 土田
繁弘 高坂
繁弘 高坂
杉崎　隆一
隆一 杉崎
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Furukawa Electric Co Ltd
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Furukawa Electric Co Ltd
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Priority to JP2013131069A priority Critical patent/JP5823448B2/ja
Priority to CN201480034336.8A priority patent/CN105308805B/zh
Priority to EP14813141.0A priority patent/EP3012926B1/en
Priority to PCT/JP2014/066473 priority patent/WO2014203998A1/ja
Publication of JP2015005667A publication Critical patent/JP2015005667A/ja
Publication of JP2015005667A5 publication Critical patent/JP2015005667A5/ja
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Publication of JP5823448B2 publication Critical patent/JP5823448B2/ja
Priority to US14/976,922 priority patent/US9722388B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • H01S3/06737—Fibre having multiple non-coaxial cores, e.g. multiple active cores or separate cores for pump and gain
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H01S3/06758—Tandem amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H01S3/06783—Amplifying coupler
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02042—Multicore optical fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/04—Gain spectral shaping, flattening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H01S3/06762—Fibre amplifiers having a specific amplification band
    • H01S3/06766—C-band amplifiers, i.e. amplification in the range of about 1530 nm to 1560 nm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094007—Cladding pumping, i.e. pump light propagating in a clad surrounding the active core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094019—Side pumped fibre, whereby pump light is coupled laterally into the fibre via an optical component like a prism, or a grating, or via V-groove coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094038—End pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094061—Shared pump, i.e. pump light of a single pump source is used to pump plural gain media in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Optical Couplings Of Light Guides (AREA)
JP2013131069A 2013-06-21 2013-06-21 増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器 Active JP5823448B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2013131069A JP5823448B2 (ja) 2013-06-21 2013-06-21 増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器
CN201480034336.8A CN105308805B (zh) 2013-06-21 2014-06-20 放大用多芯光纤设备以及多芯光纤放大器
EP14813141.0A EP3012926B1 (en) 2013-06-21 2014-06-20 Amplification-use multicore optical fiber device and multicore optical fiber amplifier
PCT/JP2014/066473 WO2014203998A1 (ja) 2013-06-21 2014-06-20 増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器
US14/976,922 US9722388B2 (en) 2013-06-21 2015-12-21 Multi-core optical amplifying fiber device and multi-core optical fiber amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013131069A JP5823448B2 (ja) 2013-06-21 2013-06-21 増幅用マルチコア光ファイバデバイスおよびマルチコア光ファイバ増幅器

Publications (3)

Publication Number Publication Date
JP2015005667A JP2015005667A (ja) 2015-01-08
JP2015005667A5 JP2015005667A5 (https=) 2015-07-02
JP5823448B2 true JP5823448B2 (ja) 2015-11-25

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Country Status (5)

Country Link
US (1) US9722388B2 (https=)
EP (1) EP3012926B1 (https=)
JP (1) JP5823448B2 (https=)
CN (1) CN105308805B (https=)
WO (1) WO2014203998A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073283B2 (ja) 1986-05-26 1995-01-18 大阪瓦斯株式会社 加熱炉

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Publication number Priority date Publication date Assignee Title
CN105720466B (zh) * 2016-04-29 2019-06-14 北京工业大学 光纤阵列放大器
CN105896251B (zh) * 2016-05-20 2019-06-14 北京工业大学 增强光信号强度的光纤阵列放大器
CN109690886A (zh) * 2016-09-09 2019-04-26 住友电气工业株式会社 光放大器和多芯光纤
JP2018041034A (ja) * 2016-09-09 2018-03-15 住友電気工業株式会社 光コネクタ及び光接続構造
JP6824814B2 (ja) * 2017-05-10 2021-02-03 日本電信電話株式会社 損失差補償器
JP2018198287A (ja) * 2017-05-24 2018-12-13 日本電信電話株式会社 増幅用ファイバ
JP2019075450A (ja) 2017-10-16 2019-05-16 住友電気工業株式会社 光増幅器およびマルチコア光ファイバ
JP6872516B2 (ja) * 2018-07-18 2021-05-19 Kddi株式会社 光通信システム及び当該光通信システムの接続装置
US12374851B2 (en) * 2018-10-01 2025-07-29 Nec Corporation Optical amplification apparatus and optical amplification method
JP2020126973A (ja) * 2019-02-06 2020-08-20 日本電信電話株式会社 増幅用ファイバ及び光増幅器
WO2020171103A1 (ja) * 2019-02-22 2020-08-27 日本電気株式会社 光増幅器、及びその制御方法
JP7214527B2 (ja) * 2019-03-26 2023-01-30 古河電気工業株式会社 マルチコア光増幅ファイバ、マルチコア光ファイバ増幅器および光通信システム
US20220337025A1 (en) * 2019-09-26 2022-10-20 Nippon Telegraph And Telephone Corporation Optical amplifier
JPWO2021059443A1 (https=) * 2019-09-26 2021-04-01
CN112711091B (zh) * 2021-01-19 2022-02-01 北京交通大学 一种用于增益均衡的多芯掺铒超模光纤
JP7453168B2 (ja) * 2021-02-19 2024-03-19 Kddi株式会社 マルチコア光ファイバを使用する光通信システムの光パワー等化器
JP2025046040A (ja) * 2023-09-21 2025-04-02 古河電気工業株式会社 マルチコア光増幅ファイバおよび光増幅器
JP2025133164A (ja) * 2024-03-01 2025-09-11 日本電気株式会社 マルチコアファイバ増幅器及び光増幅方法
CN118465914B (zh) * 2024-07-12 2024-09-06 成都信息工程大学 一种周期性掺杂铋的超宽带和低串扰的多芯光放大光纤
WO2026042739A1 (ja) * 2024-08-21 2026-02-26 住友電気工業株式会社 光学モジュール、光ファイバ増幅器およびマルチコアエルビウム添加光ファイバ
CN119471911B (zh) * 2024-10-30 2025-10-31 长飞光纤光缆股份有限公司 一种侧边泵浦耦合器及其制备方法、多芯放大器及其制备方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61141408A (ja) * 1984-12-15 1986-06-28 Fujikura Ltd デユアルコア光フアイバ
JPS61141407A (ja) * 1984-12-15 1986-06-28 Fujikura Ltd マルチコア光フアイバ
JPH10107351A (ja) * 1996-10-02 1998-04-24 Hitachi Cable Ltd 双方向伝送用Ｅｒ添加光ファイバ増幅器
JPH10242548A (ja) * 1997-02-24 1998-09-11 Hitachi Cable Ltd Ｅｒ添加マルチコアファイバ及びそれを用いた光増幅器
JP2000013316A (ja) * 1998-06-23 2000-01-14 Oki Electric Ind Co Ltd 光増幅器
JP2000208839A (ja) * 1999-01-12 2000-07-28 Sumitomo Electric Ind Ltd 光ファイバアンプおよび光増幅装置
US8725001B2 (en) * 2010-03-10 2014-05-13 Ofs Fitel, Llc Multicore fiber transmission systems and methods
EP2548056B1 (en) * 2010-03-16 2021-05-05 OFS Fitel, LLC Multicore transmission and amplifier fibers and schemes for launching pump light to amplifier cores
US8903211B2 (en) * 2011-03-16 2014-12-02 Ofs Fitel, Llc Pump-combining systems and techniques for multicore fiber transmissions
JP5598882B2 (ja) * 2011-06-16 2014-10-01 古河電気工業株式会社 光ファイバ増幅器
KR20140050674A (ko) * 2011-09-02 2014-04-29 알까뗄 루슨트 공간-분할 다중화 시스템들을 위한 방법 및 장치
DK2765661T3 (en) 2011-10-04 2019-03-18 Furukawa Electric Co Ltd MULTI-CORN OPTICAL AMPLIFIER FIBER AND MULTI-CORN OPTICAL FIBER AMPLIFIER.
US8755112B2 (en) * 2011-11-03 2014-06-17 Gooch And Housego Plc Optical fiber amplifier array
US8811787B2 (en) * 2011-11-30 2014-08-19 At&T Intellectual Property I, L.P. Multicore optical fiber with reduced inter-core crosstalk
US9007681B2 (en) * 2011-12-13 2015-04-14 Ofs Fitel, Llc Multi-core erbium-doped fiber amplifier
US9025239B2 (en) * 2011-12-13 2015-05-05 Ofs Fitel, Llc Multi-core erbium-doped fiber amplifier
JP5811056B2 (ja) * 2012-07-17 2015-11-11 住友電気工業株式会社 光部品、光ファイバ増幅器および光ファイバリング共振器
JP5557399B2 (ja) * 2012-08-30 2014-07-23 独立行政法人情報通信研究機構 マルチコアファイバを含む空間分割多重装置及び自己ホモダイン検波方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073283B2 (ja) 1986-05-26 1995-01-18 大阪瓦斯株式会社 加熱炉

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EP3012926B1 (en) 2018-04-25
EP3012926A4 (en) 2017-03-15
JP2015005667A (ja) 2015-01-08
EP3012926A1 (en) 2016-04-27
CN105308805B (zh) 2018-05-04
US9722388B2 (en) 2017-08-01
WO2014203998A1 (ja) 2014-12-24
US20160118762A1 (en) 2016-04-28
CN105308805A (zh) 2016-02-03

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