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KR970028624A - 도파로구조를 지닌 광필터 - Google Patents

도파로구조를 지닌 광필터 Download PDF

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Publication number
KR970028624A
KR970028624A KR1019960055249A KR19960055249A KR970028624A KR 970028624 A KR970028624 A KR 970028624A KR 1019960055249 A KR1019960055249 A KR 1019960055249A KR 19960055249 A KR19960055249 A KR 19960055249A KR 970028624 A KR970028624 A KR 970028624A
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KR
South Korea
Prior art keywords
region
light
optical filter
grating
clad
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KR1019960055249A
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English (en)
Inventor
마스미 이토
아키라 이노우에
토루 이와시마
요시아키 미야지마
Original Assignee
쿠라우찌 노리타카
스미도모덴기고오교오 가부시기가이샤
미야즈 준이찌로
닛뽕덴신뎅와 가부시기가이샤
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Application filed by 쿠라우찌 노리타카, 스미도모덴기고오교오 가부시기가이샤, 미야즈 준이찌로, 닛뽕덴신뎅와 가부시기가이샤 filed Critical 쿠라우찌 노리타카
Publication of KR970028624A publication Critical patent/KR970028624A/ko

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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
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317—Light guides of the optical fibre type
    • 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
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • 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
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/021—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the core or cladding or coating, e.g. materials, radial refractive index profiles, cladding shape
    • 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
    • G02B6/241—Light guide terminations
    • G02B6/243—Light guide terminations as light absorbers
    • 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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317—Light guides of the optical fibre type
    • G02B6/29319—With a cascade of diffractive elements or of diffraction operations
    • 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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29325—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide of the slab or planar or plate like form, i.e. confinement in a single transverse dimension only
    • 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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29325—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide of the slab or planar or plate like form, i.e. confinement in a single transverse dimension only
    • G02B6/29328—Diffractive elements operating in reflection
    • 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
    • G02B6/3845—Details of mounting fibres in ferrules; Assembly methods; Manufacture ferrules comprising functional elements, e.g. filters

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Filters (AREA)

Abstract

본 발명은 소정파장의 광을 반사하는 격자가 소정부분에 형성되어 있는 코어영역과, 상기 코어영역보다도 저굴절률을 지닌 동시에 해당 코어영역을 덮는 클래드 영역으로 구성된 도파로구조를 지닌 광필터에 관한 것이다. 특히, 이 광필터는 상기 격자에 의해 반사되는 광중, 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수구조를 지니고, 이 광흡수구조는 적어도 상기 격자로부터 상기 클래드영역으로 방사된 광성분이 도달하는 영역에 배치되어 있다.

Description

도파로구조를 지닌 광필터
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 광필터의 제1실시예의 횡단면도.

Claims (7)

  1. 소정의 굴절률을 지닌 코어영역과, 상기 코어영역보다도 낮은 굴절률을 지닌 동시에 상기 코어영역을 덮는 클래드영역으로 구성된 도파로구조를 지닌 광필터에 있어서, 상기 코어영역내의 소정부분에 배치되어, 소정파장의 광을 반사하는 격자와; 상기 격자에 의한 반사되는 광중, 적어도 상기 격자로부터 상기 클래드 영역으로 방사된 광성분이 도달하는 영역에 배치되어, 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수구조를 구비한 것을 특징으로 하는 도파로구조를 지닌 광필터.
  2. 제1항에 있어서, 상기 광흡수구조는 적오도 상기 클래드영역의 일부를 구성하는 유리영역을 포함하고, 상기 유리영역에는 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수재가 도핑되어 있는 것을 특징으로 하는 도파로구조를 지닌 광필터.
  3. 제1항에 있어서, 상기 광흡수구조는 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수층을 포함하고, 상기 광흡수층은, 적어도 상기 클래드영역의 일부의 외부면에 배치되어 있는 것을 특징으로 하는 도파로구조를 지닌 광필터.
  4. 제2항에 있어서, 상기 광흡수재가 도핑된 유리영역은, 상기 클래드영역의 외부영역이고, 상기 외부영역은 상기 광필터에 있어서의 모드필드직경에 의해 형성되는 광전파영역의 외측에, 상기 코어영역으로부터 소정의 거리만큼 떨어져서 위치결정되어 있는 것을 특징으로 하는 도파로구조를 지닌 광필터.
  5. 소정의 굴절률을 지닌 코어영역과; 상기 코어영역보다도 낮은 굴절률을 지닌 동시에 상기 코어영역을 덮는 클래드영역과; 상기 코영역내의 소정부분에 배치되어, 소정파장의 광을 반사하는 격자와; 상기 격자에 의해 반사되는 광중, 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수영역을 구비하고, 상기 광흡수영역은 적어도 상기 클래드영역의 일부를 구성하는 유리영역을 포함함과 동시에, 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수재로 도핑되어 있으며, 상기 유리영역은 상기 격자로부터 상기 클래드영역으로 방사된 광성분이 도달하는 영역에 배치되어 있는 것을 특징으로 하는 광필터.
  6. 제5항에 있어서, 상기 광흡수재가 도핑된 유리영역은, 상기 클래드영역의 외부영역이고, 상기 외부영역은 상기 광필터에 있어서의 모드필드직경에 의해 형성되는 광전파영역에 외측에, 상기 코어영역으로부터 소정거리만큼 떨어져서 위치결정되어 있는 것을 특징으로 하는 광필터.
  7. 소정의 굴절률을 지닌 코어영역과; 상기 코어영역보다도 낮은 굴절률을 지닌 동시에 상기 코어영역을 덮는 클래드영역과; 상기 코어영역내의 소정부분에 배치되어 소정파장의 광을 반사하는 격자와; 상기 격자에 의해 반사되는 광중, 상기 격자로부터 상기 클래드영역으로 방사된 광성분을 흡수하는 광흡수층을 구비하고, 상기 광흡수층은 적어도 상기 클래드영역의 일부의 외부면에 배치되어 있으며, 상기 클래드영역의 일부는 상기 격자로부터 방사된 광성분이 도달하는 영역에 배치되어 있는 것을 특징으로 하는 광파이버.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960055249A 1995-11-20 1996-11-19 도파로구조를 지닌 광필터 KR970028624A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7301455A JPH09145927A (ja) 1995-11-20 1995-11-20 導波路型光フィルタ
JP95-301455 1995-11-20

Publications (1)

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KR970028624A true KR970028624A (ko) 1997-06-24

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EP (1) EP0774679A1 (ko)
JP (1) JPH09145927A (ko)
KR (1) KR970028624A (ko)
CN (1) CN1080887C (ko)
AU (1) AU7175396A (ko)
CA (2) CA2190314A1 (ko)
TW (1) TW336284B (ko)

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CA2240117A1 (en) * 1997-07-23 1999-01-23 Litton Systems, Inc. Absorbing coating of optical media to prevent reflection, transmission and scatter
JP3570486B2 (ja) * 1998-10-15 2004-09-29 住友電気工業株式会社 フェルール付き光ファイバ及びその製造方法
US6636675B2 (en) 2001-03-12 2003-10-21 Verrillon, Inc. Optical fiber with reduced cladding-mode loss
KR100819309B1 (ko) * 2001-09-25 2008-04-03 주식회사 케이티 파장분할다중전송 필터 장치
CA2489319A1 (en) * 2002-07-25 2004-02-05 Showa Electric Wire & Cable Co., Ltd. Optical filter
CN100520461C (zh) * 2004-08-02 2009-07-29 日本电信电话株式会社 平面光回路、波动传播回路的设计方法
EP1763116B1 (en) * 2005-03-30 2015-04-22 Mitsubishi Denki Kabushiki Kaisha Mode control waveguide laser
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JP2012058365A (ja) * 2010-09-07 2012-03-22 Nitto Denko Corp 光導波路および光学式タッチパネル
KR101286262B1 (ko) * 2010-12-14 2013-08-23 주식회사 오이솔루션 단일 파장을 이용한 광 송수신기
JP2015509614A (ja) * 2012-02-14 2015-03-30 ホーヤ コーポレイション ユーエスエイＨｏｙａ Ｃｏｒｐｏｒａｔｉｏｎ Ｕｓａ 偏光光源用の光導波路型減衰器
CN109073823B (zh) * 2016-05-12 2021-01-08 住友电气工业株式会社 多芯光纤、光纤布拉格光栅以及光纤布拉格光栅的制作方法
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Publication number Publication date
CA2190668C (en) 2003-09-30
JPH09145927A (ja) 1997-06-06
TW336284B (en) 1998-07-11
AU7175396A (en) 1997-05-29
CA2190668A1 (en) 1997-05-21
CN1159002A (zh) 1997-09-10
EP0774679A1 (en) 1997-05-21
CN1080887C (zh) 2002-03-13
CA2190314A1 (en) 1997-05-21

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