Title :
1 Gbit/s PSK homodyne transmission system using phase-locked semiconductor lasers
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
Homodyne detection of 1 Gb/s pilot-carrier (BPSK) optical signals using phase-locked 1.5 mu m external-cavity semiconductor lasers is discussed. After 209 km fiber transmission of a 2/sup 15/-1 pseudorandom binary sequence (PRBS), the measured receiver sensitivity is 52.2 dBm or 46 photons/bit. Experimental evidence of the data-to-phase-lock crosstalk that potentially limits the usable ratio of linewidth to bit rate in pilot-carrier PSK homodyne systems is presented.<>
Keywords :
crosstalk; digital communication systems; optical fibres; optical links; optical modulation; phase shift keying; 1 Gbit/s; 209 km; PSK homodyne transmission system; bit rate; data-to-phase-lock crosstalk; fiber transmission; homodyne detection; linewidth; phase locked external cavity semiconductor lasers; pilot carrier optical signals; pseudorandom binary sequence; Binary phase shift keying; Binary sequences; Bit rate; Fiber lasers; Optical crosstalk; Optical receivers; Optical sensors; Phase detection; Phase shift keying; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
