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Machine translation
1. (WO1996009563) PLANAR WAVEGUIDES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1996/009563    International Application No.:    PCT/GB1995/002262
Publication Date: 28.03.1996 International Filing Date: 22.09.1995
Chapter 2 Demand Filed:    10.04.1996    
IPC:
G02B 6/12 (2006.01), G02B 6/13 (2006.01), G02B 6/132 (2006.01)
Applicants: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY [GB/GB]; 81 Newgate Street, London EC1A 7AJ (GB) (For All Designated States Except US).
MAXWELL, Graeme, Douglas [GB/GB]; (GB) (For US Only).
AINSLIE, Benjamin, James [GB/GB]; (GB) (For US Only)
Inventors: MAXWELL, Graeme, Douglas; (GB).
AINSLIE, Benjamin, James; (GB)
Agent: LENG, Francis, Edward; BT Group Legal Services, Intellectual Property Dept., 8th floor, Holborn Centre, 120 Holborn, London EC1N 2TE (GB)
Priority Data:
94306987.2 23.09.1994 EP
Title (EN) PLANAR WAVEGUIDES
(FR) GUIDES D'ONDES PLANS
Abstract: front page image
(EN)Planar waveguides are produced by using radiation to write path regions into a photosensitive layer. Originally, the photosensitive layer had the same refractive index as the confining regions, e.g., it consists of silica doped with oxides of Ge and B. Composite path regions are produced by depositing a glass soot onto a partial region. On sintering the soot melts to fill up the empty spaces and thereby create a composite layer.
(FR)La présente invention concerne la production de guides d'ondes plans dont les régions de trajets sont inscrites par irradiation d'une couche photosensible. A l'origine, la couche photosensible possède le même indice de réfraction que les régions aux limites et elle est, par exemple, composée de silice dopée avec des oxydes de germanium et de bore. Les régions de trajets composites sont produites par dépôt de poussière de verre sur une région partielle. Cette poussière fond par frittage et emplit les espaces vides, créant ainsi une couche composite.
Designated States: AM, AT, AU, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TT, UA, UG, US, UZ, VN.
African Regional Intellectual Property Organization (KE, MW, SD, SZ, UG)
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)