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Browsing by Author "Tsai, Sheng-Fan"

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    106-fJ/(bit.km) 2-km OFDM OM4 MMF Transmissions for Energy Efficient Optical Interconnects
    (2013)
    Lu, I-Cheng
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    Chen, Hsing-Yu
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    Wei, Chia-Chien
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    Shi, Jin-Wei
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    Tsai, Sheng-Fan
    Employing high-performance 850-nm VCSELs with oxide-relief and Zn-diffusion structures, we demonstrate 17.8-Gbps 2-km OM4 fiber transmissions. Meanwhile, ultra-low EDDR of 106 fJ/(bit km) with bias current as low as 1.9 mA is achieved.
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    Optimization of mode numbers of VCSELs for small-cell backhaul applications
    (2015-07-15)
    Lu, I-Cheng
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    Wei, Chia-Chien
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    Shi, Jin-Wei
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    Chen, Hsing-Yu
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    Tsai, Sheng-Fan
    This paper reports optical orthogonal frequency-division multiplexing (OFDM) transmission using 850 nm Zn-diffusion Vertical-Cavity Surface-Emitting Lasers (VCSELs) and multimode fiber (MMF) for small-cell backhaul applications. We also investigated the influence of side mode suppression ratio (SMSR) on the performance of OFDM modulation. By further optimizing the Zn-diffusion conditions and oxide aperture size, a high-power (6.7 mW) SM (SMSR > 30 dB) VCSEL is demonstrated. By using OFDM modulation and bit-loading algorithm, record-high BRDP (91 Gb/s km) at 26 Gb/s transmission under FEC threshold (bit error rate (BER) < 3.8 x 10(-3)) across 3.5 km OM4 fiber has been successfully demonstrated. (C) 2015 Elsevier B.V. All rights reserved.
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    Ultra Low Power VCSEL for 35-Gbps 500-m OM4 MMF Transmissions Employing FFE/DFE Equalization for Optical Interconnects
    (2013)
    Lu, I-Cheng
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    Shi, Jin-Wei
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    Chen, Hsing-Yu
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    Wei, Chia-Chien
    ;
    Tsai, Sheng-Fan
    By use of optimized design 850-nm VCSELs under OOK modulation and FFE/ DFE equalization, high bit-rate distance product (35-Gbps 500-m and 25-Gbps 1000-m) through OM4 MMF transmissions with ultra-low power consumption are successfully achieved.