Journal
OPTICS EXPRESS
Volume 23, Issue 23, Pages 29779-29787Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.029779
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- KACST-UCSB Solid State Lighting Program (SSLP) [SB140013]
- KAUST-UCSB Solid State Lighting Program (SSLP) [SB140014]
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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 x 10(-3) was less than the forward error correction (FEC) limit of 3.8 x 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. (C) 2015 Optical Society of America
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