NL183211C - Optische modulatie-inrichting. - Google Patents
Optische modulatie-inrichting.Info
- Publication number
- NL183211C NL183211C NLAANVRAGE7908526,A NL7908526A NL183211C NL 183211 C NL183211 C NL 183211C NL 7908526 A NL7908526 A NL 7908526A NL 183211 C NL183211 C NL 183211C
- Authority
- NL
- Netherlands
- Prior art keywords
- modulation device
- optical modulation
- optical
- modulation
- Prior art date
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
- G11B7/125—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
- G11B7/128—Modulators
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
- G02F1/0123—Circuits for the control or stabilisation of the bias voltage, e.g. automatic bias control [ABC] feedback loops
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53145898A JPS605926B2 (ja) | 1978-11-22 | 1978-11-22 | 光変調装置 |
JP14589878 | 1978-11-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7908526A NL7908526A (nl) | 1980-05-27 |
NL183211B NL183211B (nl) | 1988-03-16 |
NL183211C true NL183211C (nl) | 1988-08-16 |
Family
ID=15395599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7908526,A NL183211C (nl) | 1978-11-22 | 1979-11-22 | Optische modulatie-inrichting. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4306142A (ja) |
JP (1) | JPS605926B2 (ja) |
FR (1) | FR2442460A1 (ja) |
NL (1) | NL183211C (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468141B1 (fr) * | 1979-10-23 | 1985-06-21 | Mitsubishi Electric Corp | Systeme de modulation electro-optique |
NL186838C (nl) * | 1979-10-25 | 1991-03-01 | Mitsubishi Electric Corp | Optische modulatie-inrichting. |
FR2470397A1 (fr) * | 1979-11-21 | 1981-05-29 | Thomson Csf | Attenuateur optique a attenuation controlee |
JPS61239441A (ja) * | 1985-04-16 | 1986-10-24 | Olympus Optical Co Ltd | 光学的記録再生装置 |
JPH01320473A (ja) * | 1988-06-22 | 1989-12-26 | Anritsu Corp | 電気光学効果素子及びそれを用いた電気信号波形測定装置 |
US5003624A (en) * | 1990-03-29 | 1991-03-26 | Hughes Aircraft Company | Automatic bias controller for electro-optic modulator |
US5343324A (en) * | 1991-11-15 | 1994-08-30 | Amoco Corporation | Bias control and method for electro-optic modulators |
US6441940B1 (en) * | 1998-10-09 | 2002-08-27 | Agere Systems Guardian Corp. | Wavelength stabilization of light emitting components |
US7369290B1 (en) | 2003-03-19 | 2008-05-06 | Photonic Systems, Inc. | Modulator bias control |
US7630651B2 (en) * | 2005-10-21 | 2009-12-08 | Fujitsu Limited | Method and apparatus for controlling bias point of optical transmitter |
JP4935093B2 (ja) * | 2006-02-02 | 2012-05-23 | 横河電機株式会社 | 光変調装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3579145A (en) * | 1969-03-21 | 1971-05-18 | Bell Telephone Labor Inc | Modulator stabilization circuits |
US3780296A (en) * | 1972-12-22 | 1973-12-18 | Rca Ltd | Automatic optical bias control for light modulators |
CA1013854A (en) * | 1973-02-20 | 1977-07-12 | John S. Winslow | Videodisc mastering system |
US4071751A (en) * | 1976-04-26 | 1978-01-31 | Rca Limited | Automatic optical bias control for light modulators |
DE2637284C3 (de) * | 1976-08-19 | 1980-02-14 | Ernst Leitz Wetzlar Gmbh, 6300 Lahn- Wetzlar | Verfahren und Anordnungen zur automatischen Parallaxebestimmung |
-
1978
- 1978-11-22 JP JP53145898A patent/JPS605926B2/ja not_active Expired
-
1979
- 1979-11-20 US US06/096,164 patent/US4306142A/en not_active Expired - Lifetime
- 1979-11-21 FR FR7928705A patent/FR2442460A1/fr active Granted
- 1979-11-22 NL NLAANVRAGE7908526,A patent/NL183211C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2442460B1 (ja) | 1982-12-17 |
US4306142A (en) | 1981-12-15 |
JPS5570812A (en) | 1980-05-28 |
JPS605926B2 (ja) | 1985-02-14 |
NL183211B (nl) | 1988-03-16 |
NL7908526A (nl) | 1980-05-27 |
FR2442460A1 (fr) | 1980-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1A | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
V1 | Lapsed because of non-payment of the annual fee |