Title :
RF-noise-tone suppression in QPSK transmission with unisolated Fabry-Perot lasers
Author :
Lauder, R.D.T. ; Gan, H. ; Lowery, A.J.
Author_Institution :
Australian Photon. Co-Operative Res. Centre, Melbourne Univ., Vic., Australia
Abstract :
We have demonstrated a simple, economical method to suppress RF noise tones from subcarrier multiplexed networks that use unisolated Fabry-Perot lasers. This method has no insertion loss. This method will be appropriate for the cost-sensitive upstream transmission of access networks such as hybrid-fiber coax and future SCM all-optical access networks. This method increases the RF input power dynamic range at the transmitting laser by at least 20 dB if an unisolated Fabry-Perot laser is used, and by 1.6 dB compared to the use of a conventionally isolated laser.
Keywords :
acousto-optical modulation; hybrid fibre coax networks; laser noise; optical fibre subscriber loops; optical phase locked loops; quadrature phase shift keying; subcarrier multiplexing; AF optical phase modulation; QPSK transmission; RF input power dynamic range; RF-noise-tone suppression; SCM all-optical access networks; acoustic suppression technique; cost-sensitive upstream transmission; hybrid-fiber coax; phase locking condition; subcarrier multiplexed networks; unisolated Fabry-Perot lasers; virtual optical isolator; Acoustic noise; Fabry-Perot; Fiber lasers; Laser feedback; Laser noise; Optical modulation; Optical noise; Optical transmitters; Quadrature phase shift keying; Radio frequency;
Conference_Titel :
Nanostructures and Quantum Dots/WDM Components/VCSELs and Microcavaties/RF Photonics for CATV and HFC Systems, 1999 Digest of the LEOS Summer Topical Meetings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-5633-0
DOI :
10.1109/LEOSST.1999.794732
