Processing

Please wait...

Settings

Settings

1. WO2020006140 - EXTINCTION RATIO IMPROVEMENTS IN SILICON PHOTONICS

Publication Number WO/2020/006140
Publication Date 02.01.2020
International Application No. PCT/US2019/039337
International Filing Date 26.06.2019
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
10
Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
50
Transmitters
G PHYSICS
02
OPTICS
F
DEVICES 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
1
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
01
for the control of the intensity, phase, polarisation or colour
21
by interference
G PHYSICS
02
OPTICS
F
DEVICES 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
1
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
01
for the control of the intensity, phase, polarisation or colour
21
by interference
225
in an optical waveguide structure
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
10
Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
50
Transmitters
516
Details of coding or modulation
54
Intensity modulation
H04B 10/50 (2013.01)
G02F 1/21 (2006.01)
G02F 1/225 (2006.01)
H04B 10/54 (2013.01)
CPC
G02F 1/225
G02F 1/2257
G02F 1/3138
H04B 10/0731
H04B 10/505
H04B 10/5053
Applicants
  • CISCO TECHNOLOGY, INC. [US/US]; 170 West Tasman Drive San Jose, California 95134, US
Inventors
  • ANDERSON, Sean P.; US
  • WEBSTER, Mark A.; US
Agents
  • MCCLELLAN, Gero G.; US
Priority Data
16/024,67729.06.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EXTINCTION RATIO IMPROVEMENTS IN SILICON PHOTONICS
(FR) AMÉLIORATIONS DU RAPPORT D'EXTINCTION EN PHOTONIQUE SUR SILICIUM
Abstract
(EN)
Improvements in extinguishing optical signals in silicon photonics may be achieved by supplying a test signal of a known characteristics to a Photonic Element (PE) to extinguish the test signal via a first phase shifter and intensity modulator on a first arm of the PE and a second phase shifter and intensity modulator on a second arm of the PE; sweeping through a plurality of voltages at the first intensity modulator to identify a first voltage that is associated with an extinction ratio at an output of the PE that satisfies an induced loss threshold and a second voltage that is associated with an induced loss in the test signal at the output of the PE that satisfies an extinction ratio threshold; and setting the PE to provide an operational voltage to the first intensity modulator based on the first voltage and the second voltage.
(FR)
L'invention concerne des améliorations dans l'extinction de signaux optiques en photonique sur silicium qui peuvent être obtenues en fournissant un signal de test d'une caractéristique connue à un élément photonique (EP) pour éteindre le signal de test par l'intermédiaire d'un premier déphaseur et modulateur d'intensité sur un premier bras de l'EP et d'un second déphaseur et modulateur d'intensité sur un second bras de l'EP; en analysant une pluralité de tensions au niveau du premier modulateur d'intensité pour identifier une première tension qui est associée à un rapport d'extinction au niveau d'une sortie de l'EP qui satisfait un seuil de perte induit et une seconde tension qui est associée à une perte induite dans le signal de test à la sortie de l'EP qui satisfait un seuil de rapport d'extinction; et en réglant l'EP pour fournir une tension opérationnelle au premier modulateur d'intensité sur la base de la première tension et de la seconde tension.
Latest bibliographic data on file with the International Bureau