title: Experimental demonstration of 10 Gb/s multi-level carrier-less amplitude and phase modulation for short range optical communication systems.
abstract: Carrier-less amplitude and phase (CAP) modulation can be a good candidate for short range optical communications for considerable computational complexity reduction and simple system structure. In this paper, a detailed investigation on the digital filters in CAP modulation system is presented. An adaptive equalizer based on cascaded multi-modulus algorithm (CMMA) is used for the demodulation at the receiver. The impact of digital filter taps on system performance is investigated through comprehensive simulations and a 10 Gb/s CAP16 modulation system is demonstrated experimentally. The BER performance for different length of fiber link is measured. Compared with back-to-back (BTB) transmissions, 2 dB and 3.5 dB receiver power penalty are observed at BER of 10(-3) for 20 km and 40 km fiber link respectively. It clearly demonstrates the feasibility of the CAP16 modulation for the short range transmission systems.
authors.affiliation: Department of Communication Science and Engineering, and State Key Lab of ASIC & System, Fudan University, Shanghai 200433, China.
authors.forename: Li
authors.initials: L
authors.lastname: Tao
authors.forename: Yiguang
authors.initials: Y
authors.lastname: Wang
authors.forename: Yuliang
authors.initials: Y
authors.lastname: Gao
authors.forename: Alan Pak Tao
authors.initials: AP
authors.lastname: Lau
authors.forename: Nan
authors.initials: N
authors.lastname: Chi
authors.forename: Chao
authors.initials: C
authors.lastname: Lu