GB2238879B - Modulation device - Google Patents

Modulation device

Info

Publication number
GB2238879B
GB2238879B GB8924834A GB8924834A GB2238879B GB 2238879 B GB2238879 B GB 2238879B GB 8924834 A GB8924834 A GB 8924834A GB 8924834 A GB8924834 A GB 8924834A GB 2238879 B GB2238879 B GB 2238879B
Authority
GB
United Kingdom
Prior art keywords
modulation device
modulation
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 - Fee Related
Application number
GB8924834A
Other versions
GB8924834D0 (en
GB2238879A (en
Inventor
Carolyn Bowry
Zacharias K Ioannidis
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB8924834A priority Critical patent/GB2238879B/en
Publication of GB8924834D0 publication Critical patent/GB8924834D0/en
Publication of GB2238879A publication Critical patent/GB2238879A/en
Application granted granted Critical
Publication of GB2238879B publication Critical patent/GB2238879B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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 
    • G02F1/13—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  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1326—Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides
    • 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 
    • G02F1/011—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  in optical waveguides, not otherwise provided for in this subclass
    • 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 
    • G02F1/011—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  in optical waveguides, not otherwise provided for in this subclass
    • G02F1/0115—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  in optical waveguides, not otherwise provided for in this subclass in optical fibres
    • G02F1/0118—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  in optical waveguides, not otherwise provided for in this subclass in optical fibres by controlling the evanescent coupling of light from a fibre into an active, e.g. electro-optic, overlay
GB8924834A 1989-11-03 1989-11-03 Modulation device Expired - Fee Related GB2238879B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8924834A GB2238879B (en) 1989-11-03 1989-11-03 Modulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8924834A GB2238879B (en) 1989-11-03 1989-11-03 Modulation device

Publications (3)

Publication Number Publication Date
GB8924834D0 GB8924834D0 (en) 1989-12-20
GB2238879A GB2238879A (en) 1991-06-12
GB2238879B true GB2238879B (en) 1994-01-19

Family

ID=10665674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8924834A Expired - Fee Related GB2238879B (en) 1989-11-03 1989-11-03 Modulation device

Country Status (1)

Country Link
GB (1) GB2238879B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926536A1 (en) * 1997-12-23 1999-06-30 BRITISH TELECOMMUNICATIONS public limited company Tunable optical device
FR2776784A1 (en) * 1998-03-30 1999-10-01 France Telecom Electro-optical modulator, forming a Pockels cell
WO2001067166A1 (en) * 2000-03-03 2001-09-13 Lightwave Microsystems Corporation Variable optical attenuators
US20020131694A1 (en) * 2001-03-19 2002-09-19 Vincent So Wavelength tunable reflector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176626A (en) * 1985-05-29 1986-12-31 Gen Electric Plc Fibre optic coupler
GB2184859A (en) * 1985-12-04 1987-07-01 Gen Electric Plc Fibre optic devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176626A (en) * 1985-05-29 1986-12-31 Gen Electric Plc Fibre optic coupler
GB2184859A (en) * 1985-12-04 1987-07-01 Gen Electric Plc Fibre optic devices

Also Published As

Publication number Publication date
GB8924834D0 (en) 1989-12-20
GB2238879A (en) 1991-06-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941103