200 Gbps/lane IM/DD technologies for short reach optical interconnects

X Pang, O Ozolins, R Lin, L Zhang… - Journal of Lightwave …, 2020 - opg.optica.org
Client-side optics are facing an ever-increasing upgrading pace, driven by upcoming 5G
related services and datacenter applications. The demand for a single lane data rate is soon …

Tomlinson–Harashima precoding for dispersion uncompensated PAM-4 transmission with direct-detection

R Rath, D Clausen, S Ohlendorf… - Journal of Lightwave …, 2017 - opg.optica.org
Combating the destructive effects of power-fading in fiber-optic systems using direct-
detection is the key for increasing the transmission rates and/or reach. Some of the solutions …

Evaluation of real-time 8× 56.25 Gb/s (400G) PAM-4 for inter-data center application over 80 km of SSMF at 1550 nm

N Eiselt, J Wei, H Griesser, A Dochhan… - Journal of Lightwave …, 2016 - ieeexplore.ieee.org
Leveraging client optics based on intensity modulation and direct detection for point-to-point
inter-data center interconnect applications is a cost and power efficient solution, but …

400 Gb/s O-band silicon photonic transmitter for intra-datacenter optical interconnects

E El-Fiky, A Samani, D Patel, M Jacques… - Optics express, 2019 - opg.optica.org
We present and experimentally demonstrate a silicon photonic (SiP)-based four-lane 400
Gb/s transmitter for fiber-rich intra-datacenter optical interconnects. Four parallel SiP series …

168-Gb/s single carrier PAM4 transmission for intra-data center optical interconnects

E El-Fiky, M Chagnon, M Sowailem… - IEEE photonics …, 2017 - ieeexplore.ieee.org
We experimentally demonstrate 168-Gb/s single polarization four-level pulse amplitude
modulation (PAM4) transmission over 10 km of single mode fiber (SMF) in the O-band below …

Single-carrier 400G 64QAM and 128QAM DWDM field trial transmission over metro legacy links

G Khanna, T Rahman, E De Man… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
We report on the results of a field trial carried out on a Telecom Italia metro link, targeting
short data center interconnect applications. The test-bed presented realistic transmission …

FSO receiver with high optical alignment robustness using high-speed 2D-PDA and space diversity technique

T Umezawa, Y Yoshida, A Kanno… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
A free-space optical (FSO) receiver with high optical alignment robustness configured by a
single optical lens is presented, in addition to a newly developed 2-D photodetector array …

Real-time 200 Gb/s (4× 56.25 Gb/s) PAM-4 transmission over 80 km SSMF using quantum-dot laser and silicon ring-modulator

N Eiselt, H Griesser, M Eiselt, W Kaiser… - Optical Fiber …, 2017 - opg.optica.org
We report real-time 4x56. 26-Gb/s DWDM PAM-4 transmission over 80-km SSMF with novel
optical transmitter sub-assembly comprising multi-wavelength quantum-dot laser and silicon …

Direct detection solutions for 100G and beyond

MH Eiselt, N Eiselt, A Dochhan - Optical Fiber Communication …, 2017 - opg.optica.org
Abstract Pulse amplitude modulation (PAM-4) and discrete multi-tone (DMT) transmission
are contenders for metro-reach and inter data center transmission. While commercial signal …

Optical filter requirements in an EML-based single-sideband PAM4 intensity-modulation and direct-detection transmission system

HY Chen, N Kaneda, J Lee, J Chen, YK Chen - Optics Express, 2017 - opg.optica.org
The feasibility of a single sideband (SSB) PAM4 intensity-modulation and direct-detection
(IM/DD) transmission based on a CMOS ADC and DAC is experimentally demonstrated in …