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

Abdullah Alatawi, Jorge Alberto Holguin Lerma, Chun Hong Kang, Chao Shen, Ram Chandra Subedi, Abdulrahman M. Albadri, Ahmed Y. Alyamani, Tien Khee Ng, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)26355
JournalOptics Express
Volume26
Issue number20
DOIs
StatePublished - Sep 25 2018

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