CMOS monolithic photodetector with a built-in 2-dimensional light direction sensor for laser diode based underwater wireless optical communications

Lv，Zhijian1; He，Gui1; Qiu，Chengfeng1; Fan，Youyou2; Wang，Hongyi2; Liu，Zhaojun1

2021-05-24

10.1364/OE.425792

Optics Express   影响因子和分区

1094-4087

Underwater wireless optical communications (UWOC) are considered an emerging high-speed wireless network for underwater applications and compete with underwater radio frequency (RF) communications and underwater acoustic communications (UAC). Even though the utilization of laser diodes (LDs) enhances the -3dB modulation bandwidth extraordinarily from a few tens of MHz to GHz, LDs have the features of high collimation and narrow spectrum. Without the point-to-point optical alignment, the performance of the LD-based UWOC system drops exponentially because the received optical power determines the signal-to-noise ratio (SNR) of the UWOC system. To achieve a high-performance and reliable UWOC link based on LDs requires focusing optics and an alignment system. In this paper, we demonstrated a CMOS monolithic photodetector with a built-in 2-dimensional light direction sensor for the UWOC link by using a 450 nm LD and none-return-to-zero on-off keying (NRZ-OOK) modulation method. Employing this innovative technique, the field of view (FOV) was enlarged to 120°, and data rates up to 110 Mb/s at a bit error rate (BER) of 2.3×10-10 were obtained. The establishment of a proposed UWOC physical link showed enhanced communication performance for more practical and robust wireless communication applications.

SCI ; EI

英语

第一 ; 通讯

WOS:000654369300024

20212110407607

Alignment ; Bit error rate ; CMOS integrated circuits ; Light ; Modulation ; Optical communication ; Photodetectors ; Photons ; Semiconductor lasers ; Signal to noise ratio ; Underwater acoustic communication

Mechanical Devices:601.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Information Theory and Signal Processing:716.1 ; Optical Communication Systems:717.1 ; Computer Programming:723.1 ; Light/Optics:741.1 ; Semiconductor Lasers:744.4.1 ; Acoustic Waves:751.1 ; Atomic and Molecular Physics:931.3

PHYSICS

2-s2.0-85106319790

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen, Guangdong,China
2.School of Microelectronic,Xi'an Jiaotong University,Xi'an, Shaanxi,China

Lv，Zhijian,He，Gui,Qiu，Chengfeng,et al. CMOS monolithic photodetector with a built-in 2-dimensional light direction sensor for laser diode based underwater wireless optical communications[J]. Optics Express,2021,29(11):16197-16204.

Lv，Zhijian,He，Gui,Qiu，Chengfeng,Fan，Youyou,Wang，Hongyi,&Liu，Zhaojun.(2021).CMOS monolithic photodetector with a built-in 2-dimensional light direction sensor for laser diode based underwater wireless optical communications.Optics Express,29(11),16197-16204.

Lv，Zhijian,et al."CMOS monolithic photodetector with a built-in 2-dimensional light direction sensor for laser diode based underwater wireless optical communications".Optics Express 29.11(2021):16197-16204.