200 Gb/s/ λ Bidirectional Coherent PON Solutions Demonstrated over Field Installed Fiber

We demonstrate 200 Gb/s bidirectional coherent PON solutions using a simplified optical network unit (ONU) over 19 km of field-installed fiber. The ONU receiver is a single-polarization heterodyne detector with either a balanced or a single-ended photodetector and the transmitter is based on dual-polarization electro-absorption modulated laser (EML). The optical line terminal (OLT) uses standard dual-polarization coherent transceivers. The downstream solutions achieve 37 dB and 30.5 dB power budget for the receiver with balanced and single-ended photodiodes, respectively. For the upstream, two line rates have been investigated: 200 Gb/s/λ for symmetrical transmission and 100 Gb/s/λ for asymmetric transmission achieving a power budget of 30.1 dB and 40.9 dB respectively

Simplified Coherent Receivers for Passive Optical Networks

Simplified coherent receivers are attractive for future high-speed passive optical networks (PON) since they enable a trade-off between performance and cost. We present the most promising solutions for 200 Gb/s, demonstrating that single polarisation heterodyne receivers achieve the PON requirements at significantly reduced cost

A Minimal Coherent Receiver for 200 Gb/s/λ PON Downstream with Measured 29 dB Power Budget

We experimentally demonstrate 200 Gb/s/λ downstream transmission for a passive optical network (PON) with a minimal coherent receiver at optical network unit (ONU). The low complexity receiver required at the cost-sensitive ONU employs heterodyne detection and requires a single photodiode, a 3-dB optical coupler and a local oscillator, and is the simplest coherent receiver. At the optical line terminal (OLT), digital pre-emphasis and Alamouti-coding is applied to the 50 GBaud signal. A power budget of 29 dB is experimentally demonstrated, increasing to 34.5 dB if a balanced receiver is utilized

200 Gb/s/λ Bidirectional Coherent PON Solutions Demonstrated over Field Installed Fiber

We demonstrate 200 Gb/s bidirectional coherent PON solutions using a simplified optical network unit (ONU) over 19 km of field-installed fiber. The ONU receiver is a single-polarization heterodyne detector with either a balanced or a single-ended photodetector and the transmitter is based on dual-polarization electro-absorption modulated laser (EML). The optical line terminal (OLT) uses standard dual-polarization coherent transceivers. The downstream solutions achieve 37 dB and 30.5 dB power budget for the receiver with balanced and single-ended photodiodes, respectively. For the upstream, two line rates have been investigated: 200 Gb/s/λ for symmetrical transmission and 100 Gb/s/λ for asymmetric transmission achieving a power budget of 30.1 dB and 40.9 dB respectively

Research data supporting "200 Gb/s/λ Upstream PON Using Polarization Multiplexed PAM4 with Coherent Detection"

The processed data was obtained by analising captured oscilloscope traces using offline digital signal processing (DSP) in Matlab. The DSP contains carrier frequency recovery, an adaptive equalizer based on least-mean squares, and a maximum likelihood sequence estimator. The sensitivity is taken at BER = 10^-2. Power budget is a combination of sensitivity and launch power, taken at the SOA output. The SOA characteristics were measured using a commercial optical power meter."This work was funded by Engineering and Physical Sciences Research Council grant [EP/S022139/1, EP/R035342/1

Data supporting publication "200 Gb/s/λ Bidirectional Coherent PON Solutions Demonstrated over Field Installed Fiber"

This data supports the publication ""200 Gb/s/λ Bidirectional Coherent PON Solutions Demonstrated over Field Installed Fiber". The files included are the OTDR trace files for 1550 nm and 1310 nm (.sor files), the combined file (.iolm file) and the generated report (.pdf) This is raw data and has not been processed. The files are in industry standard file format. The data.xlsx contains the processed data for the graphs presented in the paper. The data was processed in matlab, using previously publised algorithms specific to Alamouti coded transmission, as well as industry standard decision directed equalizers

Research Data Supporting "A Minimal Coherent Receiver for 200 Gb/s/λ PON Downstream with Measured 29 dB Power Budget"

The processed data was obtained by analising captured oscilloscope traces using offline digital signal processing (DSP) in Matlab. The DSP contains carrier frequency recovery and adaptive equalizer based on least-mean squares. The sensitivity is taken at BER = 10^-2. Power budget is a combination of sensitivity and launch power, taken at the EDFA output. Optical Spectrum analyser power measurement raw data. Text file contains power measurement for each frequenc

Dataset supporting publication "200 Gb/s/λ Upstream PON using Polarization Multiplexed PAM4 with Coherent Detection"

The processed data was obtained by analysing captured oscilloscope traces using offline digital signal processing (DSP) in Matlab. The DSP contains carrier frequency recovery, an adaptive equalizer based on least-mean squares, and a maximum likelihood sequence estimator. The sensitivity is taken at BER = 10^-2. Power budget is a combination of sensitivity and launch power, taken at the SOA output. The SOA characteristics were measured using a commercial optical power meter. The MLSE trellis size scales 4^x, where x is the memory depth. In the nonlinear equalisers plot optimum MLSE lenght was used. Volterra equalizer is of 3rd order

Research data supporting publication "Simplified Coherent Optical Network Units for Very High Speed Passive Optical Networks"

The data was obtained by analising the oscilloscope traces using the digital signal processing algorithms . The data contains Sensitivity and Power Budget numbers for a PON system in line with International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard requirements. For power budget the bit error rate threshold is taken at pre-FEC error rate of 10^-2. Only processed data is included due to the large size of the oscilloscope trace collectio

Data supporting publication "Symmetric Bidirectional 200 Gb/s/λ PON Solution Demonstrated over Field Installed Fiber"

This data supports the publication for OFC 2024. The data was obtained by analising the oscilloscope traces using the digital signal processing algorithms descibed in the conference submission. The data contains Sensitivity and Power Budget numbers for a PON system in line with International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard requirements. For power budget the bit error rate threshold is taken at pre-FEC error rate of 10^-2. Only processed data is included due to the large size of the oscilloscope trace collectio