A hybrid CATV/16-QAM-OFDM visible laser light communication system

作者：Lin Chun Yu^*; Li Chung Yi; Lu Hai Han; Chen Chia Yi; Jhang Tai Wei; Ruan Sheng Siang; Wu Kuan Hung

来源：Laser Physics, 2014, 24(10): 105206.

DOI：10.1088/1054-660X/24/10/105206

• spatial light modulator
• vertical cavity surface emitting laser
• visible laser light communication

A visible laser light communication (VLLC) system employing a vertical cavity surface emitting laser and spatial light modulator with hybrid CATV/16-QAM-OFDM modulating signals over a 5 m free-space link is proposed and demonstrated. With the assistance of a push-pull scheme, low-noise amplifier, and equalizer, good performances of composite second-order and composite triple beat are obtained, accompanied by an acceptable carrier-to-noise ratio performance for a CATV signal, and a low bit error rate value and clear constellation map are achieved for a 16-QAM-OFDM signal. Such a hybrid CATV/16-QAM-OFDM VLLC system would be attractive for providing services including CATV, Internet and telecommunication services.

• 出版日期2014-10