High-power blue superluminescent diode for high CRI lighting and high-speed visible light communication

Abstract
We demonstrated a high-power (474 mW) blue superluminescent diode (SLD) on c-plane GaN-substrate for speckle-free solid-state lighting (SSL), and high-speed visible light communication (VLC) link. The device, emitting at 442 nm, showed a large spectral bandwidth of 6.5 nm at an optical power of 105 mW. By integrating a YAG-phosphor-plate to the SLD, a CRI of 85.1 and CCT of 3392 K were measured, thus suitable for solid-state lighting. The SLD shows a relatively large 3-dB modulation bandwidth of >400 MHz, while a record high data rate of 1.45 Gigabit-per-second (Gbps) link has been achieved below forward-error correction (FEC) limit under non-return-to-zero on-off keying (NRZ-OOK) modulation scheme. Our results suggest that SLD is a promising alternative for simultaneous speckle-free white lighting and Gbps data communication dual functionalities.

Citation
Alatawi AA, Holguin-Lerma JA, Kang CH, Shen C, Subedi RC, et al. (2018) High-power blue superluminescent diode for high CRI lighting and high-speed visible light communication. Optics Express 26: 26355. Available: http://dx.doi.org/10.1364/oe.26.026355.

Acknowledgements
King Abdulaziz City for Science and Technology (KACST), Grant No. KACST TIC R2-FP-008; This work was partially supported by the King Abdullah University of Science and Technology (KAUST) baseline funding, BAS/1/1614-01-01; KAUST equipment funding KCR/1/2081-01-01; GEN/1/6607-01-01; KAUST-KFUPM Special Initiative (KKI) Program, REP/1/2878-01-01.

Publisher
The Optical Society

Journal
Optics Express

DOI
10.1364/oe.26.026355

Additional Links
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-20-26355

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