Patent ID: 6021236
Filing Date: 2000-02-01
Classification: H04B

Abstract:
A procedure for creating an optical output signal (S') in which two optical signal parts (S.sub.1, S.sub.2) of different frequencies are created from one optical signal (.nu..sub.o), of fixed frequency where one of the two optical signal parts (S.sub.1, S.sub.2) is impressed with a data signal (D) and both optical signal parts (S.sub.1, S.sub.2) together form the optical output signal (S')characterised bythe optical signal (S) being fed to two branches (4, 5) so that in one of the two branches (4, 5) two optical sideband carriers (.nu..sub.0 -f.sub.m, .nu..sub.0 +f.sub.m) are created with regard to the optical signal (S), of which one is removed, and by the optical signal (S) in one of the two branches (4, 5) being impressed with a data signal (D) and by the two divided optical signals (S.sub.1, S.sub.2) being then brought together as one single optical output signal (S').