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Analogue and digital transmission using polymer optical fibre

Analogue and digital transmission using polymer optical fibre

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The performance of a hybrid AM/BPSK (amplitude modulated/binary phase shift keying) polymer optical fibre transmission system has been investigated. A BPSK modulated 2 Mbit/s pseudorandom digital channel is substituted for one of the AM channels in a 60-channel cable TV system. For the digital channel, a bit error rate of < 10–9 is obtained after transmission through 200 m of fibre. The results show that distortion caused by laser nonlinearity did not degrade the system at low modulation depth.

Inspec keywords: digital communication; phase shift keying; optical fibre communication; amplitude modulation; optical modulation; error statistics; optical polymers; cable television

Other keywords: polymer optical fibre; hybrid AM/BPSK transmission system; laser nonlinearity; distortion; binary phase shift keying; 2 Mbit/s; binary PSK; AM channels; analogue transmission; 200 m; digital transmission; low modulation depth; amplitude modulation; BER; bit error rate; cable TV system; pseudorandom digital channel

Subjects: Modulation and coding methods; Optical communication; CATV and wired systems

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