(19)
(11) EP 0 222 765 A1

(12)

(43) Date of publication:
27.05.1987 Bulletin 1987/22

(21) Application number: 85904120.0

(22) Date of filing: 14.08.1985
(51) International Patent Classification (IPC): 
G02B 6/ 293( . )
G02B 6/ 12( . )
 G02B 6/ 124( . )
(86) International application number:
PCT/GB1985/000362
(87) International publication number:
WO 1986/001304 (27.02.1986 Gazette 1986/05)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 17.08.1984 US 19840641754

(71) Applicants:
  • Canadian Industrial Innovation Centre/Waterloo
    Waterloo Ontario N2L 3L3 (CA)
  • IDEA CORPORATION
    Ontario M5E 1V3 (CA)
  • ASQUITH, Anthony
    5 Balfour Place Mount Street London W1Y 5RG (GB)

(72) Inventors:
  • LIT, John, W., Y.
    Ontario N2L 5T6 (CA)
  • HEWAK, Daniel, W.
    Ontario L8G 3G1 (CA)

   


(54) WAVELENGTH DIVISION MULTIPLEXER AND DEMULTIPLEXER