OPTICAL DISPERSION EIGENCOMPENSATORS FOR HIGH-SPEED LONG-HAUL IM DD LIGHTWAVE SYSTEMS - COMPUTER-SIMULATION/

This paper proposes what is believed to be the first linear optical di spersion-compensating technique capable of more effectively compensati ng for dispersively chirped signal than dispersively chirp-free signal , An effective digital eigenfilter approach is introduced for designin g optical dispersion eigencompensators (ODEC's) for compensation of th e combined effects of laser chirp and fiber chromatic dispersion at 15 50 nm in high-speed long-haul intensity-modulation direct-detection (I M/DD) lightwave systems, An integrated-optic synthesis of the ODEC usi ng planar lightwave circuit (PLC) technology is proposed to enable hig h-speed signal regeneration, The proposed eigencompensating scheme is shown to result in the phenomenon of optical power enhancement: the co mbined effects of laser chirp, fiber chromatic dispersion and ODEC gro up delay can re-open the receiver eye further than the ideal eye-openi ng, The eigencompensating approach is shown to compare favorably with the Chebyshev filter technique in both the frequency and time domains.