Researches

Our research:
Optical Wireless Communications (OWC) / Visible Light Communications (VLC)
Silicon Photonics (SiPh)
Radio-over-Fiber (ROF)
Artificial Intelligent (AI) and Machine Learning Optical Systems


Optical Wireless Communication for 6G Mobile Networks 

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"Enabling Techniques for Optical Wireless Communication Systems," Invited Talk, M2F.1, OFC 2020  
Optical wireless communication (OWC) has emerged as a complementary or alternative technology to radio-frequency (RF) communication since OWC can offer cost efficient and highly reliable access solutions for wireless communication and release the pressure on the highly congested traditional RF spectrum.

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Mobirise

40.665 Gbit/s RGB VLC Transmission with 2 m Free Space Transmission
We demonstrated a VLC system at 40.665 Gbit/s using tricolor red, green and blue (RGB) laser diodes (LDs) and polarization multiplexing. The implementation included orthogonal frequency divsion multiplexing (OFDM) bit-loading, power-loading, and polarization multiplexing.

Mobirise

3D Visible-Light-Positioning (VLP) System using Machine Learning 
We proposed and demonstrated a received-signal-strength (RSS) based visible-light-positioning (VLP) system using sigmoid function data preprocessing (SFDP) method; and applied it to two types of regression based machine learning algorithms; including the second-order linear regression machine learning (LRML) algorithm, and the kernel ridge regression machine learning (KRRML) algorithm. Experimental average positioning error of about 2 cm in both horizontal and vertical directions were achieved.

Mobirise

6.915 Gbit/s White-Light LD VLC and Indoor Lighting
We demonstrated a recorded single channel 6.915 Gbit/s white-light VLC. By optimizing the bit-loading algorithm onto the DCO-OFDM signal, high data rate can be achieved. The proposed white-light VLC system can provide both lighting and communication simultaneously with functional propagation distance.


Silicon Photonics !! 

Mobirise
Mobirise

Silicon Photonics 
Silicon photonic technology allows a very high components miniaturization and integration. It is “CMOS-compatible”, meaning that it can be manufactured using standard CMOS fabrication process.
Our team has successfully developed and demonstrated 100 Gbit/s per wavelength DP-QPSK coherent transmission based on silicon photonic technology.

2.6 Tbit/s On-chip Silicon Photonic Optical Interconnect based on Mode-Division Multiplexing !!
We successfully developed and demonstrated a > 2.6 Tbit/s on-chip optical interconnect. This work has been selected to be IEEE Photonics Technology Letters as the Cover Page in May/June 2018 issue.

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Mobirise

MOST FutureTech Demo and Breakthrough Award 2018 !!
We successfully demonstrated a SiPh cross-connect of the data center networks and network-on-chip. This work also received Taiwan government recognition with the MOST FutureTech Demo and Breakthrough Award (2018) 科技部未來科技突破獎 (Total 81 awards out of about 430 research teams of cross-discipline in Taiwan) in recognition of his research breakthroughs and promising technology for the future.

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