Open Access23 Gbit/s underwater wireless optical communications using directly modulated 520 nm laser diode
Author(s) -
Hassan M. Oubei,
Changping Li,
Kihong Park,
Tien Khee Ng,
MohamedSlim Alouini,
Boon S. Ooi
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.020743
Subject(s) - bit error rate , avalanche photodiode , gigabit , optical wireless , transmitter , optics , computer science , bandwidth (computing) , photodiode , free space optical communication , optical communication , on off keying , keying , forward error correction , transmission (telecommunications) , laser diode , amplitude shift keying , modulation (music) , laser , quadrature amplitude modulation , phase shift keying , wireless , physics , telecommunications , detector , decoding methods , channel (broadcasting) , acoustics
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.