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1. (WO2003058338) OPTICAL POWER LIMITER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2003/058338    International Application No.:    PCT/IL2003/000017
Publication Date: 17.07.2003 International Filing Date: 06.01.2003
IPC:
G02B 6/14 (2006.01), G02B 6/26 (2006.01), G02F 1/01 (2006.01)
Applicants: KILOLAMBDA IP LIMITED [GB/GB]; Trident Chambers, Wickhams Cay P.O. Box 146, Road Town, Tortola (VG) (For All Designated States Except US).
ORON, Ram [IL/IL]; (IL) (For US Only).
NEVO, Doron [IL/IL]; (IL) (For US Only).
ORON, Moshe [IL/IL]; (IL) (For US Only)
Inventors: ORON, Ram; (IL).
NEVO, Doron; (IL).
ORON, Moshe; (IL)
Agent: WOLFF, BREGMAN AND GOLLER; P.O. Box 1352, 19 B Keren Hayesod Street, Jerusalem 91013 (IL)
Priority Data:
147554 10.01.2002 IL
Title (EN) OPTICAL POWER LIMITER
(FR) LIMITEUR OPTIQUE
Abstract: front page image
(EN)There is provided an optical power limiting device, including a waveguide section (2), having at least one core (6) with an optical energy input end (8), an optical energy output end (10) and cladding (4) surrounding at least a portion of the core, the waveguide section including means affecting its properties upon being subjected to optical energy passing therethrough, which cause thermal changes in the core. A method for limiting the power transmitted through a waveguide is also provided. In one embodiment the waveguide cladding (4) is asymmetric, such that thermal expansion causes the waveguide to deflect, thereby reducing optical coupling to a second waveguide section (16). In a second embodiment the thermal changes cause a reduction of the refractive index difference between core and cladding, thus leading to leakage of optical energy into the cladding.
(FR)Cette invention se rapporte à un dispositif de limitation de la puissance optique, qui comprend une section guide d'ondes, comportant au moins une âme avec une extrémité d'entrée d'énergie optique, une extrémité de sortie d'énergie optique et une gaine entourant au moins une partie de l'âme. La section guide d'ondes est pourvue d'un moyen qui modifie les propriétés de ladite section lorsqu'une énergie optique le traverse, ce qui produit des changements thermiques dans l'âme. Un procédé servant à limiter la puissance transmise par le guide d'ondes est également décrit.
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, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (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, 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: English (EN)