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1. WO1996002860 - HIGH-SPEED EXTERNAL MODULATOR

Publication Number WO/1996/002860
Publication Date 01.02.1996
International Application No. PCT/US1994/007839
International Filing Date 13.07.1994
Chapter 2 Demand Filed 02.02.1996
IPC
G02F 1/035 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
035in an optical waveguide structure
G02F 1/225 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
21by interference
225in an optical waveguide structure
CPC
G02F 1/0356
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
035in an optical waveguide structure
0356controlled by a high-frequency electromagnetic wave component in an electric waveguide structure
G02F 1/2255
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
21by interference
225in an optical waveguide structure
2255controlled by a high-frequency electromagnetic component in an electric waveguide structure
G02F 2201/07
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2201Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
07buffer layer
G02F 2201/127
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2201Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
12electrode
127travelling wave
Applicants
  • GENERAL MICROWAVE ISRAEL CORPORATION [US/IL]; 37 Pierre Koenig Street 91083 Jerusalem, IL
Inventors
Agents
  • VOLPE, Anthony, S. ; 400 One Penn Center 1617 John F. Kennedy Boulevard Philadelphia, PA 19103, US
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-SPEED EXTERNAL MODULATOR
(FR) MODULATEUR EXTERIEUR HAUTE VITESSE
Abstract
(EN)
An improved high-speed external optical modulator (10), modulated by RF waves, which velocity matches the RF waves with the optical waves is disclosed. The apparatus includes a lithium niobate substrate (16) on which is formed an optical waveguide (18, 20), electrically floating electrodes (32, 33, 34), a low dielectric buffer layer (30) and electrodes carrying the modulated RF energy (22, 24). At least one floating electrode (32, 33, 34) may comprise a series of spaced electrode segments for enhanced performance at high frequencies.
(FR)
Modulateur (10) optique extérieur haute vitesse, perfectionné, modulé par des ondes à fréquence radioélectrique, adaptant, grâce à cette vitesse, les ondes à fréquence radioélectrique aux ondes optiques. Cet appareil comprend un substrat (16) en niobate de lithium sur lequel sont formés un guide d'onde (18, 20) optique, des électrodes (23, 33, 34) flottant de manière électrique, une couche tampon (30) de diélectrique faible ainsi que des électrodes portant l'énergie (22, 24) à fréquence radioélectrique modulée. Au moins une électrode (32, 33, 34) flottante peut comprendre une série de segments espacés d'électrode aux fins d'une performance accrue à hautes fréquences.
Also published as
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