Search Results - "Ping-Chiek Koh"
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Net 220 Gbps/λ IM/DD Transmssion in O-Band and C-Band With Silicon Photonic Traveling-Wave MZM
Published in Journal of lightwave technology (01-07-2021)“…We present the design and characterization of O-band and C-band silicon photonic (SiP) traveling wave Mach-Zehnder modulators (TW-MZM) allowing 220 Gbps/λ net…”
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Journal Article -
2
Adiabatic Coupler With Design-Intended Splitting Ratio
Published in Journal of lightwave technology (15-12-2019)“…We demonstrate adiabatic couplers (ADCs) with design-intended splitting ratios (SRs) for the silicon-on-insulator (SOI) platform. The operational principle,…”
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Journal Article -
3
2D Constellation Distortion for Subduing Equalization Noise in Bandwidth- Limited IMDD Systems
Published in IEEE photonics technology letters (01-03-2022)“…Bandwidth-limited IMDD systems suffer from the noise boosted by the strong equalization at the receiver. This letter proposes a multiplication-free approach…”
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Journal Article -
4
Experimental Demonstration of 600 Gb/s Net Rate PAM4 Transmissions Over 2 km and 10 km With a 4-λ CWDM TOSA
Published in Journal of lightwave technology (01-06-2020)“…We propose to introduce a controlled amount of inter-symbol interference (ISI) during pulse shaping in a high symbol rate intensity modulation direct detection…”
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Journal Article -
5
Wavelength-Interleaved 4D-PAM4-TCM in a 4-λ × 100 Gb/s CWDM System
Published in IEEE photonics technology letters (01-07-2020)“…In a practical 4-λ coarse wavelength division multiplexing (CWDM) intensity modulation direct detection (IM/DD) system, different wavelength channels achieve…”
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Journal Article -
6
Net 300 Gbps/λ Transmission Over 2 km of SMF With a Silicon Photonic Mach-Zehnder Modulator
Published in IEEE photonics technology letters (15-12-2021)“…Employing our 47 GHz bandwidth silicon photonic (SiP) traveling wave Mach-Zehnder modulator (TW-MZM), we demonstrate the transmission of 134 Gbaud PAM-4 (net…”
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Journal Article -
7
Widely tunable electroabsorption-modulated sampled-grating DBR laser transmitter
Published in IEEE journal of selected topics in quantum electronics (01-11-2002)“…We report on a widely tunable transmitter based on a sampled-grating distributed Bragg reflector (SG-DBR) laser monolithically integrated with a semiconductor…”
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Journal Article -
8
Thermal effects in monolithically integrated tunable laser transmitters
Published in IEEE transactions on components and packaging technologies (01-12-2005)“…We investigate thermal effects in widely tunable laser transmitters based on an integrated single chip design. The chip contains a sampled-grating distributed…”
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Net 212.5 Gbit/s Transmission in O-Band with a SiP MZM, One Driver and Linear Equalization
Published in 2020 Optical Fiber Communications Conference and Exhibition (OFC) (01-03-2020)“…We present an O-band SiP MZM design enabling net transmission of 212.5 (200) Gbit/s over 2 (10) km using PAM-8 modulation and 20% SD-FEC, and net 200 Gbit/s…”
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Conference Proceeding -
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High Gain-Bandwidth Waveguide Coupled Silicon Germanium Avalanche Photodiode
Published in 2020 Conference on Lasers and Electro-Optics (CLEO) (01-05-2020)“…We present the DC, small signal and large signal performance of low excess-noise waveguide coupled germanium-on-silicon avalanche photodetectors with over 400…”
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Conference Proceeding -
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Highly Sensitive, 112 Gb/s O-Band Waveguide Coupled Silicon-Germanium Avalanche Photodetectors
Published in 2019 Optical Fiber Communications Conference and Exhibition (OFC) (01-03-2019)“…We present two different waveguide coupled SiGe APDs. We report 25 Gb/s error free operation with −12 dBm input power. Additionally, 112 Gb/s PAM-4 operation…”
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Conference Proceeding -
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High Extinction Ratio and Broadband O-Band Polarization Splitter and Rotator on Silicon-on-Insulator
Published in 2019 Optical Fiber Communications Conference and Exhibition (OFC) (01-03-2019)“…We experimentally demonstrate a silicon photonic O-band polarization splitter and rotator. The wafer-level extinction ratio over 80 nm bandwidth has an average…”
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Conference Proceeding