Patent ID: 6721086
Filing Date: 2004-04-13
Classification: H04B

Abstract:
An optical fibre emulator, comprising:an optical signal demodulator, having an input port for receiving a digitally-encoded optical signal and an output port for producing a digitally-encoded electrical signal corresponding to said digitally-encoded optical signal; a digital shifter register for propagating digital data encoded on said electrical signal, said shift register having an input port for receiving said digital data encoded on said electrical signal, an information transfer rate substantially equal to the information transmission rate of a section of optical fibre of given length for a given wavelength, and an output port for reproducing said digital data after a predetermined time delay; and an optical signal modulator, having an input port for receiving said digital data from said output port of said shift register and an output port for producing a digitally-encoded optical signal corresponding to said digitally-encoded electrical signal, the information transfer time from said input port of said optical signal demodulator to said output port of said optical signal modulator being less than or equal to the information transfer time of said section of optical fibre.