WO2008152727A1 - 光結合素子、及び磁気記録装置 - Google Patents

光結合素子、及び磁気記録装置 Download PDF

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Publication number
WO2008152727A1
WO2008152727A1 PCT/JP2007/062108 JP2007062108W WO2008152727A1 WO 2008152727 A1 WO2008152727 A1 WO 2008152727A1 JP 2007062108 W JP2007062108 W JP 2007062108W WO 2008152727 A1 WO2008152727 A1 WO 2008152727A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
coupling device
optical coupling
core layer
diffraction grating
Prior art date
Application number
PCT/JP2007/062108
Other languages
English (en)
French (fr)
Inventor
Wataru Odajima
Fumihiro Tawa
Shinya Hasegawa
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/062108 priority Critical patent/WO2008152727A1/ja
Publication of WO2008152727A1 publication Critical patent/WO2008152727A1/ja

Links

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
    • G02B6/34—Optical coupling means utilising prism or grating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/314—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Head (AREA)

Abstract

【課題】入射光の向きを変えて出射することが可能で、且つ結合効率が高い光結合素子を提供する。 【解決手段】光ファイバからの光を伝播するコア層と、該コア層の周囲に設けられ該コア層よりも屈折率が低いクラッド層とを備える光導波路を有する光結合素子において、該コア層上に回折格子を設け、該光ファイバと該回折格子間には、該光ファイバからの光を該回折格子に導入する、該クラッド層よりも屈折率が小さい導入部を設けたことを特徴とする光結合素子。
PCT/JP2007/062108 2007-06-15 2007-06-15 光結合素子、及び磁気記録装置 WO2008152727A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062108 WO2008152727A1 (ja) 2007-06-15 2007-06-15 光結合素子、及び磁気記録装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062108 WO2008152727A1 (ja) 2007-06-15 2007-06-15 光結合素子、及び磁気記録装置

Publications (1)

Publication Number Publication Date
WO2008152727A1 true WO2008152727A1 (ja) 2008-12-18

Family

ID=40129344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062108 WO2008152727A1 (ja) 2007-06-15 2007-06-15 光結合素子、及び磁気記録装置

Country Status (1)

Country Link
WO (1) WO2008152727A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100278484A1 (en) * 2007-06-29 2010-11-04 Imec Waveguide Coupling Probe and Methods for Manufacturing Same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133514A (ja) * 1983-01-21 1984-07-31 Nippon Telegr & Teleph Corp <Ntt> 光結合回路およびその作製方法
JPS6033516A (ja) * 1983-08-04 1985-02-20 Matsushita Electric Ind Co Ltd 光導波路素子
JPH02260205A (ja) * 1989-03-31 1990-10-23 Sharp Corp 光磁気複合ヘッド
JP2004109426A (ja) * 2002-09-18 2004-04-08 Hitachi Chem Co Ltd 傾斜したコア端面を有するポリマー光導波路デバイスの製造方法
JP2004125992A (ja) * 2002-09-30 2004-04-22 Hitachi Cable Ltd モード変換機能付きガラス導波路及びその製造方法並びに光デバイス
US20040156589A1 (en) * 2003-02-11 2004-08-12 Luxtera, Inc Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
JP2005043497A (ja) * 2003-07-24 2005-02-17 Tdk Corp 光導波路

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133514A (ja) * 1983-01-21 1984-07-31 Nippon Telegr & Teleph Corp <Ntt> 光結合回路およびその作製方法
JPS6033516A (ja) * 1983-08-04 1985-02-20 Matsushita Electric Ind Co Ltd 光導波路素子
JPH02260205A (ja) * 1989-03-31 1990-10-23 Sharp Corp 光磁気複合ヘッド
JP2004109426A (ja) * 2002-09-18 2004-04-08 Hitachi Chem Co Ltd 傾斜したコア端面を有するポリマー光導波路デバイスの製造方法
JP2004125992A (ja) * 2002-09-30 2004-04-22 Hitachi Cable Ltd モード変換機能付きガラス導波路及びその製造方法並びに光デバイス
US20040156589A1 (en) * 2003-02-11 2004-08-12 Luxtera, Inc Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
JP2005043497A (ja) * 2003-07-24 2005-02-17 Tdk Corp 光導波路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100278484A1 (en) * 2007-06-29 2010-11-04 Imec Waveguide Coupling Probe and Methods for Manufacturing Same

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