KR20000004652A - 앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레지 시스템 - Google Patents
앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레지 시스템 Download PDFInfo
- Publication number
- KR20000004652A KR20000004652A KR1019980026143A KR19980026143A KR20000004652A KR 20000004652 A KR20000004652 A KR 20000004652A KR 1019980026143 A KR1019980026143 A KR 1019980026143A KR 19980026143 A KR19980026143 A KR 19980026143A KR 20000004652 A KR20000004652 A KR 20000004652A
- Authority
- KR
- South Korea
- Prior art keywords
- refractive index
- reference light
- optical element
- angular multiplexing
- data storage
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000013500 data storage Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000012780 transparent material Substances 0.000 claims abstract description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 229940095102 methyl benzoate Drugs 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
-
- 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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
-
- 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
- G11B7/1395—Beam splitters or combiners
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24035—Recording layers
- G11B7/24044—Recording layers for storing optical interference patterns, e.g. holograms; for storing data in three dimensions, e.g. volume storage
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2504—Holographic discs; Holographic digital data storage [HDDS]
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Abstract
Description
Claims (4)
- 레이저에서 발진된 레이저 빔을 기준광과 물체광으로 분리시키는 빔 스플리터와 홀로그램 기록매체의 기준광측 광로 상에 기준광의 진행각을 변위시키기 위한 굴절율 가변 광학소자가 설치되어 구성된 것을 특징으로 하는 앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레이지 시스템.
- 제 1 항에 있어서, 상기 굴절율 가변 광학소자는 투명재질로 속이 빈 삼각통형으로 형성된 투명체와, 이 투명체의 내부 밀폐공간에 담기는 굴절율 변화물질와, 상기 굴절율 변화물질을 가열하기 위한 가열요소로 구성된 것을 특징으로 하는 앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레이지 시스템.
- 제 1 항에 있어서, 상기 투명체에는 유리가 이용되고, 굴절율 변화물질에는 메칠벤조에트, 글리세린이 이용되며, 상기 투명체의 빔이 꺽이게 되는 면에는 빔의 손실을 막기 위하여 반사층이 형성되어 구성된 것을 특징으로 하는 앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레이지 시스템.
- 제 1 항에 있어서, 상기 가열요소에는 상기 투명체의 외측으로 감겨진 전열코일이 이용되며, 상기 투명체에는 온도를 감지하기 위하여 온도 감지요소가 결합되어 구성된 것을 특징으로 하는 앵귤러 멀티플렉싱 타입 홀로그램 데이타 스토레이지 시스템.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980026143A KR100316381B1 (ko) | 1998-06-30 | 1998-06-30 | 앵귤러멀티플렉싱타입홀로그램데이터스토레지시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980026143A KR100316381B1 (ko) | 1998-06-30 | 1998-06-30 | 앵귤러멀티플렉싱타입홀로그램데이터스토레지시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000004652A true KR20000004652A (ko) | 2000-01-25 |
KR100316381B1 KR100316381B1 (ko) | 2002-02-28 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019980026143A KR100316381B1 (ko) | 1998-06-30 | 1998-06-30 | 앵귤러멀티플렉싱타입홀로그램데이터스토레지시스템 |
Country Status (1)
Country | Link |
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KR (1) | KR100316381B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100657004B1 (ko) * | 2005-08-24 | 2006-12-14 | 엘지전자 주식회사 | 홀로그래픽 정보저장장치용 광원 시스템 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2199162B1 (ko) * | 1972-09-08 | 1976-10-29 | Thomson Csf |
-
1998
- 1998-06-30 KR KR1019980026143A patent/KR100316381B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100657004B1 (ko) * | 2005-08-24 | 2006-12-14 | 엘지전자 주식회사 | 홀로그래픽 정보저장장치용 광원 시스템 |
Also Published As
Publication number | Publication date |
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KR100316381B1 (ko) | 2002-02-28 |
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