ULTRABROADBAND POLARIZATION INSENSITIVE HYBRID USING MULTIPLANE LIGHT CONVERSION

We designed, fabricated and tested an optical hybrid that supports an octave of bandwidth (900-1800 nm) and below 4-dB insertion loss using multiplane light conversion. Measured phase errors are below 3 degreesacross a measurement bandwidth of 390 nm.

First Transmission of a 12D Format Across Three Coupled Spatial Modes of a 3-Core Coupled-Core Fiber at 4 bits/s/Hz

We demonstrate the first transmission of a space-division multiplexed 12D modulation format over a three-core coupled-core multicore fiber. The format occupies a single time slot spread across all three linearly-coupled spatial modes and shows improvements in MI and GMI after transmission compared to PDM-QPSK.

Scalable Arrays of 107 Gbit/s Surface-Normal Electroabsorption Modulators

We demonstrate arrays of surface-normal electroabsorption modulators with ultrawide bandwidth (>>65 GHz), polarization insensitive response and ultralow total coupling loss to single-mode-fibers (0.7 dB). We show modulation up to 107 Gbit/s and packaging with arrayed-waveguide-gratings.

Maximizing Fiber Cable Capacity under a Supply Power Constraint using Deep Neural Networks

We experimentally achieve a 19% capacity gain per Watt of electrical supply power in a 12-span link by eliminating gain flattening filters and optimizing launch powers using deep neural networks in a parallel fiber context.

Secure Free-Space Optical Communication Via Amplified Spontaneous Emission (ASE)

We propose a secure free-space optical (FSO) communication scheme employing the internal randomness of amplified spontaneous emission. 60-Gbit/s FSO transmission is demonstrated with temporal and spectral encryption.

Demonstration of Monitoring and Data Analytics-triggered reconfiguration for partially disaggregated optical networks

We demonstrate a novel agent for optical disaggregated optical networks. When the Monitoring and Data Analytics detects a degradation, it recommends the SDN controller to trigger a network reconfiguration computed by a novel planning tool.

Novel Optical Field Reconstruction for IM/DD with Receiver Bandwidth Well Below Full Optical Signal Bandwidth

We propose a novel signal reception scheme for IM/DD enabling optical field reconstruction. We experimentally demonstrate 60-GBd PAM-4 transmission over 80-km with 33-GHz electrical bandwidth at both transmitter and receiver, without optical filtering, optical dispersion compensation, nor optical amplification, allowing for 20-fold transmission distance.

Transceiver Technologies for Next-Generation PON

We will review the specific requirements for upgrading passive optical networks and present recent research on high speed optical transmission for Next-Generation TDM-, TWDM- and WDM-PONs based on low cost optical and DSP technologies.

FPGA Implementation of Deep Neural Network Based Equalizers for High-Speed PON

Deep neural network-based equalizer is presented to outperform MLSE as the receiver equalizer for 50Gb/s PON link. Parallelization of DNN is proposed to reduce the hardware resource and is verified in FPGA implementations.

FPGA Implementation of Deep Neural Network Based Equalizers for High-Speed PON

A fixed-point deep neural network-based equalizer is implemented in FPGA and is shown to outperform MLSE in receiver sensitivity for 50 Gb/s PON downstream link. Embedded parallelization is proposed and verified to reduce hardware resources.

Gain and Temporal Equalizer for Multi-Mode Systems

We present a device enabling individual spectro-temporal control of 15 spatial modes. Realizing independent control over both polarizations on each mode, flexible attenuation and +/-20ps of tunable delay over bandwidths exceeding 100 nm is enabled

50G PON FEC Evaluation with Error Models for Advanced Equalization

The consecutive error behavior at the FEC decoder input arising from advanced equalization schemes is modeled using a sub-class of Fritchman's Markov models. An optical power penalty of 0.3 dB is incurred for a variant of the IEEE 802.3ca LDPC code with this structure to model errors at the output ...

Mode-Multiplexed Full-Field Reconstruction Using Direct and Phase Retrieval Detection

We realize mode-multiplexed full-field reconstruction over six-spatial-and-polarization modes after 30-km multimode fiber transmission using intensity-only measurements without any optical carrier. The receiver?s capabilities to cope with modal dispersion and mode-dependent loss are experimentally demonstrated.

Record 300 Gb/s per Channel 99 GBd PDM-QPSK Full C-Band Transmission over 20570 km using CMOS DACs

We demonstrate a record 300 Gb/s per-channel bitrate over 20570 km across the full C-band. The measured 41 channels are modulated with 99 GBd PDM-QPSK using CMOS DACs and optical pre-emphasis, avoiding nonlinear compensation.

O-Band Reflective Electroabsorption Modulator for 50 Gb/s NRZ and PAM-4 Colorless Transmission

We present a 50 Gb/s O-band reflective electroabsorption modulator operating in both non-return-to-zero (NRZ) and PAM-4 modulation formats without equalization. We obtained >9 dB NRZ dynamic extinction ratio for a peak-to-peak voltage of 2.4 V.

Demonstration of Alarm Correlation in Partially Disaggregated Optical Networks

We present and demonstrate the alarm correlation capability executed as an SDN application in an open, partially disaggregated multi-vendor optical network. This SDN application reconciles device alarms from Open Terminals with service alarms from an Open Line System controller to perform fault isolation, alarm correlation, and optical restoration.

Optical Broadcasting and Steering by Demultiplexing Incoherent Spatial Modes

We realize optical broadcasting and reconfigurable beam steering by demultiplexing incoherent spatial modes. We demonstrate point-to-multipoint optical wireless communications using multimode VCSEL and multi-plane light conversion.

In-Phase/Quadrature Modulation by Directly Reflectivity Modulated Laser

We report a directly reflectivity modulated laser that generates a 50-Gbaud QPSK signal with a BER of 2.2×10?5. We believe this is the first demonstration of a coherent transmitter made from a directly driven laser.

52 -TB/S WDM TRANSMISSION OVER FIELD-DEPLOYED FIBER

We present results of 40 channel WDM transmission experiments over one and two spans of 93 km field deployed SSMF in the network of Etisalat. We achieved 52 Tbit/s for PCS-256-QAM with entropy 7.5 bits and 48.4 Tbit/s for 64-QAM transmission, respectively.

Arrays of Surface-Normal Electroabsorption Modulators with Ultra-High Speed

We demonstrate arrays of surface-normal electroabsorption modulators with ultrawide bandwidth (>>65 GHz), polarization insensitive response and ultralow total coupling loss to single-mode-fibers (0.7 dB). We show modulation up to 107 Gbit/s and packaging with arrayed-waveguide-gratings.