Title :
Transmission of M-QAM signals using an unisolated DFB laser
Author :
Woodward, S.L. ; Chesnutt, A.E. ; Gnauck, A.H. ; Lu, X.
Author_Institution :
AT&T Lab., Red Bank, NJ, USA
Abstract :
We examine the transmission of M-ary quadrature-amplitude modulated (M-QAM) signals using an unisolated distributed-feedback (DFB) laser. Since forward-error-correction is readily available, it is employed in the experiments. We demonstrate that unisolated DFB´s can transmit over 80 64-QAM channels; these could carry 500 compressed video channels.
Keywords :
cable television; distributed feedback lasers; optical fibre subscriber loops; optical modulation; optical transmitters; quadrature amplitude modulation; video signal processing; M-QAM signal transmission; M-ary quadrature-amplitude modulated signals; QAM channels; cable TV; compressed video channels; forward-error-correction; unisolated DFB laser; Bandwidth; Fiber lasers; Hybrid fiber coaxial cables; Laser noise; Optical fiber communication; Optical noise; Quadrature amplitude modulation; RF signals; Radio frequency; Video compression;
Journal_Title :
Photonics Technology Letters, IEEE
