WDM-VLLC and White-Lighting Ring Networks With Optical Add-Drop Multiplexing Scheme

• Published in: Journal of lightwave technology Vol. 40; no. 13; pp. 4196 - 4205
• Main Authors: Lu, Hai-Han, Huang, Xu-Hong, Chen, Yu-Ting, Chang, Poh-Suan, Lin, Yan-Yu, Ko, Ting, Liu, Chen-Xuan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive optics; Bit error rate; Computer networks; Frequency locking; High speed; High-speed optical techniques; Illumination; Lighting; Multiplexing; Optical add-drop multiplexing scheme; Optical communication; Optical feedback; Optical fiber networks; Optical fibers; Optoelectronics; ring network; Semiconductor lasers; visible laser light communication (VLLC); Wavelength division multiplexing; wavelength-division-multiplexing (WDM); White light; white-lighting
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2022.3162205

A wavelength-division-multiplexing (WDM)-visible laser light communication (VLLC) and white-lighting ring network with a 150-Gbit/s accumulative transmission rate at central station (CS), a 50-Gbit/s transmission rate at optical node, and a 604-lux white-lighting at CS is successfully demonstrated. Red, green, and blue laser diodes employing two-stage injection locking and optoelectronic feedback techniques are utilized to afford the dual functions of high-speed VLLC links and white-light illumination at reading/writing-level. By deploying optical add-drop multiplexing scheme, this newly-built WDM-VLLC and white-lighting ring network is promising since it allows a point-to-multipoint link and a two-way operation in free-space transmission. Impressively low bit error rate of 10 −9 , clear PAM4 eye diagrams, and qualified white-lighting for reading and writing are achieved through 7.5 m/9 m/10.5 m/12 m VLLC link with 5 m plastic optical fiber transmission. Such constructed WDM-VLLC and white-lighting ring network shows a potential one for the evolution of high-speed VLLC with white-lighting for reading/writing.