Title :
Laser-Phase-Fluctuation-Insensitive Optical Coherent Detection Scheme for Radio-over-Fiber System
Author :
Kuri, Toshiaki ; Sakamoto, Takanori ; Guo-Wei Lu ; Kawanishi, Tetsuyas
Author_Institution :
Photonic Network Res. Inst., Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
Laser-phase-fluctuation-insensitive optical coherent detection scheme with two-tone local light and digital signal processing technique for a radio-over-fiber (RoF) signal is proposed and experimentally demonstrated. Data recovery with the error vector magnitude of less than 14% rms is successfully performed for 10- and 2.5-Gbaud 25-GHz-band QPSK RoF signals. In addition, bit error rate of less than 10$^{-5}$ is also verified for 10-Gbaud 25-GHz-band QPSK RoF signal after 20-km fiber-optic transmission even if the light source with the linewidth of more than 10 MHz in the transmitter is used.
Keywords :
error statistics; light sources; light transmission; optical signal detection; optical transmitters; radio-over-fibre; vectors; QPSK RoF signal; RoF system; bit error rate; data recovery; digital signal processing technique; distance 20 km; error vector magnitude; fiber-optic transmission; frequency 25 GHz; laser-phase-fluctuation-insensitive optical coherent detection scheme; light source; optical transmitter; radio-over-fiber system; two-tone local light technique; Amplitude modulation; Laser noise; Optical fibers; Optical polarization; Optical receivers; Optical transmitters; Digital signal processing; laser frequency offset; optical coherent detection; phase noise; radio-over-fiber (RoF); two-tone local light;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2313620
