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1. (WO2004023196) METHOD FOR CONTROLLING AN OPTOELECTRONIC COMPONENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2004/023196 International Application No.: PCT/FI2003/000649
Publication Date: 18.03.2004 International Filing Date: 04.09.2003
IPC:
G02F 1/01 (2006.01) ,G02F 1/225 (2006.01) ,G02F 1/313 (2006.01)
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
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
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
29
for the control of the position or the direction of light beams, i.e. deflection
31
Digital deflection devices
313
in an optical waveguide structure
Applicants:
VALTION TEKNILLINEN TUTKIMUSKESKUS [FI/FI]; Vuorimiehentie 5 FIN-02150 Espoo, FI (AllExceptUS)
AALTO, Timo [FI/FI]; FI (UsOnly)
KAPULAINEN, Markku [FI/FI]; FI (UsOnly)
HARJANNE, Mikko [FI/FI]; FI (UsOnly)
RÖNÖ, Markku [FI/FI]; FI (UsOnly)
Inventors:
AALTO, Timo; FI
KAPULAINEN, Markku; FI
HARJANNE, Mikko; FI
RÖNÖ, Markku; FI
Agent:
PAPULA OY; P.O. Box 981 FIN-00101 Helsinki, FI
Priority Data:
2002158304.09.2002FI
Title (EN) METHOD FOR CONTROLLING AN OPTOELECTRONIC COMPONENT
(FR) PROCEDE DE COMMANDE D'UN COMPOSANT OPTOELECTRONIQUE
Abstract:
(EN) A method for controlling an optoelectronic component that includes two waveguides (3 and 4). The refractive index of the first waveguide (3) is changed periodically with a first control signal (1), the amplitude of which is changed between a first amplitude level (I) and higher second amplitude level (II). The refractive index of the second waveguide (4) is changed periodically with a second control signal (2), the amplitude of which is changed between the aforementioned first amplitude level (I) and a lower third amplitude level (III). When the control signals are on their common first amplitude level (I), the refractive indices of the waveguides are equal and the phase difference between them is zero. When the first control signal is on the second amplitude level (II) and the second control signal on the third amplitude level (III), the refractive indices of the waveguides are unequal so that their mutual phase difference has a predetermined target value. For accelerating a phase-difference change both control signals are adjusted during both the rise and the fall time periods simultaneously so that their combined effect leads to a very fast phase difference change, which settles already before the refractive indices of the waveguides are settled.
(FR) La présente invention concerne un procédé de commande d'un composant optoélectronique qui comprend deux guides d'ondes (3 et 4). L'indice de réfraction du premier guide d'ondes (3) est changé périodiquement à l'aide d'un premier signal de commande (1), dont l'amplitude varie entre un premier niveau d'amplitude (I) et un deuxième niveau d'amplitude plus élevée (II). L'indice de réfraction du second guide d'ondes (4) est changé périodiquement à l'aide d'un second signal de commande (2), dont l'amplitude varie entre le premier niveau d'amplitude susmentionné (I) et un troisième niveau d'amplitude (III). Lorsque des signaux de commande atteignent leur premier niveau d'amplitude commun (I), les indices de réfraction des guides d'ondes sont égaux et la différence de phase entre ces derniers est égale à zéro. Lorsque le premier signal de commande atteint le deuxième niveau d'amplitude (II) et le second signal de commande atteint le troisième niveau d'amplitude (III), les indices de réfraction des guides d'ondes sont inégaux, de sorte que leur différence de phase mutuelle présente une valeur cible prédéterminée. Afin d'accélérer un changement de différence de phase, les deux signaux de commande sont réglés au cours de périodes temporelles de montée et de descente, simultanément, de sorte que leur effet combiné entraîne un changement de différence de phase extrêmement rapide, laquelle se stabilise déjà avant que les indices de réfraction des guides d'ondes soient stabilisés.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Finnish (FI)
Also published as:
EP1535107US20060088239CA2497019DE000060305192AU2003261660