2 Gbit/s data transmission from an unfiltered laser-based phosphor-converted white lighting communication system

Changmin Lee, Chao Shen, Hassan M. Oubei, Michael Cantore, Bilal Janjua, Tien Khee Ng, Robert M. Farrell, Munir M. El-Desouki, James S. Speck, Shuji Nakamura, Boon S. Ooi, Steven P. DenBaars

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

We demonstrate data transmission of unfiltered white light generated by direct modulation of a blue gallium nitride (GaN) laser diode (LD) exciting YAG:Ce phosphors. 1.1 GHz of modulation bandwidth was measured without a limitation from the slow 3.8 MHz phosphor response. A high data transmission rate of 2 Gbit/s was achieved without an optical blue-filter using a non-return-to-zero on-off keying (NRZ-OOK) modulation scheme. The measured bit error rate (BER) of 3.50 × 10−3 was less than the forward error correction (FEC) limit of 3.8 × 10−3. The generated white light exhibits CIE 1931 chromaticity coordinates of (0.3628, 0.4310) with a color rendering index (CRI) of 58 and a correlated color temperature (CCT) of 4740 K when the LD was operated at 300 mA. The demonstrated laser-based lighting system can be used simultaneously for indoor broadband access and illumination applications with good color stability.
Original languageEnglish (US)
Pages (from-to)29779
JournalOptics Express
Volume23
Issue number23
DOIs
StatePublished - Nov 5 2015

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