An 8 m/9.6 Gbps Underwater Wireless Optical Communication System

作者：Lu Hai Han^*; Li Chung Yi; Lin Hung Hsien; Tsai Wen Shing; Chu Chien An; Chen Bo Rui; Wu Chang Jen

来源：IEEE Photonics Journal, 2016, 8(5): 7906107.

DOI：10.1109/JPHOT.2016.2601778

• Quadrature-amplitude modulation (QAM)-orthogonal frequency-division multiplexing (OFDM)
• fiber collimator
• two-stage injection-locked technique
• underwater wireless optical communication

An 8 m/9.6 Gbps underwater wireless optical communication (UWOC) system based on a two-stage injection-locked 405 nm blue light laser diode (LD) transmitter with a 16-quadrature amplitude modulation (QAM)-orthogonal frequency-division multiplexing (OFDM) modulating signal is proposed and experimentally demonstrated. To the best of our knowledge, it is the first one that employs a two-stage injection-locked technique to improve the transmission performance of UWOC systems. With the assistance of an equalizer at the receiver site, acceptable bit error rate (BER) performance and a constellation map are obtained over an 8-m underwater link. Such a two-stage injection-locked 405 nm blue light LD transmitter-based UWOC system is shown to be a promising alternative, presenting its feasibility for long-range and high-speed underwater links.

• 出版日期2016-10