JPH0520817B2 - - Google Patents

Info

Publication number
JPH0520817B2
JPH0520817B2 JP58166731A JP16673183A JPH0520817B2 JP H0520817 B2 JPH0520817 B2 JP H0520817B2 JP 58166731 A JP58166731 A JP 58166731A JP 16673183 A JP16673183 A JP 16673183A JP H0520817 B2 JPH0520817 B2 JP H0520817B2
Authority
JP
Japan
Prior art keywords
light source
optical waveguide
semiconductor laser
open
branched optical
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.)
Expired - Lifetime
Application number
JP58166731A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6059548A (ja
Inventor
Manabu Yamamoto
Hitoshi Kawaguchi
Hiroo Ukita
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58166731A priority Critical patent/JPS6059548A/ja
Publication of JPS6059548A publication Critical patent/JPS6059548A/ja
Publication of JPH0520817B2 publication Critical patent/JPH0520817B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • 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
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • 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
    • G02B6/4246—Bidirectionally operating package structures
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Head (AREA)
JP58166731A 1983-09-12 1983-09-12 光学ヘツド Granted JPS6059548A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58166731A JPS6059548A (ja) 1983-09-12 1983-09-12 光学ヘツド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58166731A JPS6059548A (ja) 1983-09-12 1983-09-12 光学ヘツド

Publications (2)

Publication Number Publication Date
JPS6059548A JPS6059548A (ja) 1985-04-05
JPH0520817B2 true JPH0520817B2 (enExample) 1993-03-22

Family

ID=15836699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58166731A Granted JPS6059548A (ja) 1983-09-12 1983-09-12 光学ヘツド

Country Status (1)

Country Link
JP (1) JPS6059548A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621131A (ja) * 1985-06-26 1987-01-07 Matsushita Electric Ind Co Ltd 光学ヘツド
JP2607064B2 (ja) * 1986-03-18 1997-05-07 富士通株式会社 導波路型光学ヘツド
JPS62251707A (ja) * 1986-04-24 1987-11-02 Fujitsu Ltd 光受動部品
JPH0814895B2 (ja) * 1986-12-26 1996-02-14 松下電器産業株式会社 光情報処理装置
JP2615647B2 (ja) * 1987-08-11 1997-06-04 セイコーエプソン株式会社 光ピックアップ
US6181673B1 (en) * 1996-07-30 2001-01-30 Read-Rite Corporation Slider design
ATE456815T1 (de) * 2005-07-25 2010-02-15 Research In Motion Ltd Koordinierung von umgebungslichtmessung und lichtemission
US7352930B2 (en) 2005-07-25 2008-04-01 Research In Motion Limited Shared light pipe for a message indicator and light sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036967B2 (enExample) * 1971-12-17 1975-11-28
JPS4888951A (enExample) * 1972-02-23 1973-11-21
JPS5037402A (enExample) * 1973-08-03 1975-04-08
JPS5817977B2 (ja) * 1974-08-02 1983-04-11 シャープ株式会社 ヒカリヨミトリソウチ

Also Published As

Publication number Publication date
JPS6059548A (ja) 1985-04-05

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