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UID:20260525T222350EDT-8447VohNcJ@132.216.98.100
DTSTAMP:20260526T022350Z
DESCRIPTION:Abstract\n\nThe relentless growth of internet traffic demand\, 
 along with the rising traction of bandwidth-intensive applications\, is dr
 iving datacenters to seek higher transmission capacities. The performance 
 of transmission systems has traditionally been limited by the transmitter 
 electro-optic modulator. Therefore\, this thesis focuses on studying the a
 rchitectures and system-level trade-offs for both IMDD and coherent transm
 ission systems utilizing silicon photonics (SiP) and thin-film lithium nio
 bate (TFLN) modulators.\n\nThe thesis explores the wavelength-architecture
  2×2 matrix. In the first part\, we focus on IMDD systems using both SiP a
 nd TFLN MZMs. With early access to TFLN technology\, we demonstrate the ca
 pability of driving TFLN MZMs with sub 1 Vpp single-ended driving swings\,
  achieving net 300 Gbps transmission rates. Additionally\, we propose a tr
 ansmitter architecture that eliminates the need for separate RF drivers an
 d transmitter DSP\, achieving a record net 400 Gbps/λ transmission rate fo
 r single DAC operation. Furthermore\, we propose and validate the design o
 f a SiP vestigial sideband transmitter (VSB) targeting long-reach C-band I
 MDD transmission. The proposed SiP VSB transmitter architecture employs pu
 re intensity modulation with a single differential-output DAC\, enabling t
 he transmission of 56 Gbaud PAM4 signals over 60 km of dispersion-uncompen
 sated single-mode fiber.\n\nIn the second part\, we propose and advocate e
 mploying TFLN-based coherent transmission systems for short-reach intra-da
 tacenter communications (2 to 10 km). We highlight the challenges facing I
 MDD to stretch beyond 800 Gbps operation. Moreover\, we demonstrate the fi
 rst O-band transmission system operating at net 1.6 Tbps over a single 10 
 km optical fiber using a single-carrier TFLN O-band coherent transmitter a
 t 167 Gbaud DP-64QAM. Furthermore\, we provide a power consumption compari
 son between the different IMDD and coherent architectures for 1.6 Tbps ope
 ration\, strongly supporting our proposal for adopting TFLN-based coherent
  transmission for short-reach applications.\n\nThe third part demonstrates
  the first net 1 Tbps/λ transmission over 80 km of SSMF using a single-seg
 ment SiP IQ modulator with only electronic equalization at 105 Gbaud DP-64
 QAM. In addition\, we study the system-level trade-offs and optimizations 
 that enabled a 30 GHz modulator to support operating beyond 100 Gbaud and 
 achieve this record transmission rate.\n\nIn the last part\, we propose an
 d validate a method to reduce the equalization-enhanced in-band noise that
  can be incorporated into the receiver DSP after conventional equalizers a
 nd improve transmission performance. In simulations\, and validated with e
 xperimental data\, we observe a gain of 0.5 dB in the signal-to-noise rati
 o when the proposed method is employed.\n
DTSTART:20230822T140000Z
DTEND:20230822T160000Z
LOCATION:Room 603\, McConnell Engineering Building\, CA\, QC\, Montreal\, H
 3A 0E9\, 3480 rue University
SUMMARY:PhD defence of Essam Berikaa - Advancing Datacenter Interconnects w
 ith High-Speed Silicon Photonic and Thin-Film Lithium Niobate Transmitters
URL:/ece/channels/event/phd-defence-essam-berikaa-adva
 ncing-datacenter-interconnects-high-speed-silicon-photonic-and-thin-349760
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