239 citations · 482 across the 22 of their papers we have counts for
22 papers
FPGA-Based Experimental Analysis of Fixed-Point Precision Impact on SOP Estimation in Coherent Communications Receivers
Geraldo Gomes, Rafael Vieira, Hani Kbashi +8
We experimentally evaluated the sensing-communication trade-off from the fixed-point precision MIMO equalizer using FPGA. At 7-bit, noise floor drops 100x and angular error 63%, bu…
Net 835-Gb/s/λ Carrier- and LO-Free 100-km Transmission Using Channel-Aware Phase Retrieval Reception
Hanzi Huang, Haoshuo Chen, Qian Hu +9
We experimentally demonstrate the first carrier- and LO-free 800G/λ receiver enabling direct compatibility with standard coherent transmitters via phase retrieval, achieving net 83…
Distortion-Aware Phase Retrieval Receiver for High-Order QAM Transmission with Carrierless Intensity-Only Measurements
Hanzi Huang, Haoshuo Chen, Qi Gao +7
We experimentally investigate transmitting high-order quadrature amplitude modulation (QAM) signals with carrierless and intensity-only measurements with phase retrieval (PR) recei…
Real-time Optical Network Sensing Control Plane Enabled by a Novel Sub us Response Time Fibre Sensing Control Device
Mijail Szczerban, Mikael Mazur, Lauren Dallachiesa +4
We propose and implement a novel fibre sensing control device and associated sensing control plane that effectively controls backscatter and polarization-based fibre sensing. We ex…
Real-Time Monitoring of Cable Break in a Live Fiber Network using a Coherent Transceiver Prototype
Mikael Mazur, Lauren Dallachiesa, Roland Ryf +10
We monitor a 524km live network link using an FPGA-based sensing-capable coherent transceiver prototype during a human-caused cable break. Post-analysis of polarization data reveal…
Digital Twin of a Network and Operating Environment Using Augmented Reality
Haoshuo Chen, Xiaonan Xu, Jesse E. Simsarian +9
We demonstrate the digital twin of a network, network elements, and operating environment using machine learning. We achieve network card failure localization and remote collaborat…
Advanced Distributed Submarine Cable Monitoring and Environmental Sensing using Constant Power Probe Signals and Coherent Detection
Mikael Mazur, Nicolas K. Fontaine, Megan Kelleher +6
In this work we demonstrate an FPGA-based coherent optical frequency domain reflectometry setup for cable monitoring. Using coherent detection for averaging and narrowband filterin…
Alignment of Free-Space Coupling of Few-Mode Fibre to Multi-Mode Fibre using Digital Holography
Menno van den Hout, Sjoerd van der Heide, Thomas Bradley +11
Off-axis digital holography is used to align a few-mode fiber to a multi-mode fiber in a free-space optical setup. Alignment based on power coupling measurements alone cannot guara…
Optical Field Characterization using Off-axis Digital Holography
Sjoerd van der Heide, Bram van Esch, Menno van den Hout +10
Angular resolved digital holography is presented as a technique for real-time characterization of the full optical field (amplitude and phase) of space-division multiplexing compon…
Transoceanic Phase and Polarization Fiber Sensing using Real-Time Coherent Transceiver
Mikael Mazur, Jorge C. Castellanos, Roland Ryf +15
We implement a real-time coherent transceiver with fast streaming outputs for environmental sensing. Continuous sensing using phase and equalizer outputs over 12800km of a submarin…
Impulse Response Characterization of a Commercial Multimode Fiber using Superconducting Nanowire Single-Photon Detectors
Yuanhang Zhang, Nicolas K. Fontaine, Mikael Mazur +4
Time-of-flight measurements are key to study distributed mode coupling and differential mode group delay (DMDG) in multimode fibers (MMFs). However, current approaches using regula…
Power Efficient Communication for Low Signal to Noise Ratio Optical Links
Ravikiran Kakarla, Mikael Mazur, Jochen Schröder +1
Receiver sensitivity is a particularly important metric in optical communication links operating at low signal-to-noise ratios (SNRs), for example in deep-space communication, sinc…
Digital Interference Mitigation in Space Division Multiplexing Self-Homodyne Coherent Detection
Hanzi Huang, Yetian Huang, Haoshuo Chen +7
We propose a digital interference mitigation scheme to reduce the impact of mode coupling in space division multiplexing self-homodyne coherent detection and experimentally verify…
Exploiting Angular Multiplexing for Polarization-diversity in Off-axis Digital Holography
Sjoerd van der Heide, Rutger van Anrooij, Menno van den Hout +9
Digital holography measures the complex optical field and transfer matrix of a device, polarization-diversity is often achieved through spatial multiplexing. We introduce angular m…
On the Performance under Hard and Soft Bitwise Mismatched-Decoding
Tsuyoshi Yoshida, Mikael Mazur, Jochen Schröder +2
We investigated a suitable auxiliary channel setting and the gap between Q-factors with hard and soft demapping. The system margin definition should be reconsidered for systems emp…
Joint Superchannel Digital Signal Processing for Ultimate Bandwidth Utilization
Mikael Mazur, Jochen Schröder, Magnus Karlsson +1
Modern optical communication systems transmit multiple frequency channels, each operating very close to its theoretical limit. The total bandwidth can reach 10THz limited by the op…
Performance Monitoring for Live Systems with Soft FEC and Multilevel Modulation
Tsuyoshi Yoshida, Mikael Mazur, Jochen Schröder +2
Performance monitoring is an essential function for margin measurements in live systems. Historically, system budgets have been described by the Q-factor converted from the bit err…
Multi-wavelength arbitrary waveform generation through spectro-temporal unitary transformations
Mikael Mazur, Nicolas K. Fontaine, Haoshuo Chen +6
Temporal waveform manipulation is a fundamental functionality in optics and crucial for applications like optical communications, microwave photonics and quantum optics. Traditiona…
Phase-coherent lightwave communications with frequency combs
Lars Lundberg, Mikael Mazur, Ali Mirani +5
Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber band…
Enabling high spectral efficiency coherent superchannel transmission with soliton microcombs
Mikael Mazur, Myoung-Gyun Suh, Attila Fülöp +5
Optical communication systems have come through five orders of magnitude improvement in data rate over the last three decades. The increased demand in data traffic and the limited…
High-order coherent communications using mode-locked dark-pulse Kerr combs from microresonators
Attila Fülöp, Mikael Mazur, Abel Lorences-Riesgo +7
Microresonator frequency combs harness the nonlinear Kerr effect in an integrated optical cavity to generate a multitude of phase-locked frequency lines. The line spacing can reach…
Long-haul coherent communications using microresonator-based frequency combs
Attila Fülöp, Mikael Mazur, Abel Lorences-Riesgo +8
Microresonator-based frequency combs are strong contenders as light sources for wavelength-division multiplexing (WDM). Recent demonstrations have shown the potential of microreson…