2.3 Gbit/s underwater wireless optical communications using directly modulated 520 nm laser diode

Hassan M. Oubei, Changping Li, Kihong Park, Tien Khee Ng, Mohamed-Slim Alouini, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

134 Scopus citations

Abstract

We experimentally demonstrate a record high-speed underwater wireless optical communication (UWOC) over 7 m distance using on-off keying non-return-to-zero (OOK-NRZ) modulation scheme. The communication link uses a commercial TO-9 packaged pigtailed 520 nm laser diode (LD) with 1.2 GHz bandwidth as the optical transmitter and an avalanche photodiode (APD) module as the receiver. At 2.3 Gbit/s transmission, the measured bit error rate of the received data is 2.23×10−4, well below the forward error correction (FEC) threshold of 2×10−3 required for error-free operation. The high bandwidth of the LD coupled with high sensitivity APD and optimized operating conditions is the key enabling factor in obtaining high bit rate transmission in our proposed system. To the best of our knowledge, this result presents the highest data rate ever achieved in UWOC systems thus far.
Original languageEnglish (US)
Pages (from-to)20743
JournalOptics Express
Volume23
Issue number16
DOIs
StatePublished - Jul 30 2015

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