title: 2 Gbit/s data transmission from an unfiltered laser-based phosphor-converted white lighting communication system.
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.
authors.forename: Changmin
authors.initials: C
authors.lastname: Lee
authors.forename: Chao
authors.initials: C
authors.lastname: Shen
authors.forename: Hassan M
authors.initials: HM
authors.lastname: Oubei
authors.forename: Michael
authors.initials: M
authors.lastname: Cantore
authors.forename: Bilal
authors.initials: B
authors.lastname: Janjua
authors.forename: Tien Khee
authors.initials: TK
authors.lastname: Ng
authors.forename: Robert M
authors.initials: RM
authors.lastname: Farrell
authors.forename: Munir M
authors.initials: MM
authors.lastname: El-Desouki
authors.forename: James S
authors.initials: JS
authors.lastname: Speck
authors.forename: Shuji
authors.initials: S
authors.lastname: Nakamura
authors.forename: Boon S
authors.initials: BS
authors.lastname: Ooi
authors.forename: Steven P
authors.initials: SP
authors.lastname: DenBaars