Optical Fiber Communication Conference

Seamless QKD Integration in 20-km 32-user Coherent PON and NG-PON2 without Fiber Architecture Modification

Jing Wang, Brian J. Rollick, Zhensheng Jia

Published Jan 1, 2026• 0 citations

Abstract

We first experimentally demonstrated the seamless integration of an O-band BB84 QKD channel into a 20-km 32-user coherent PON and NG-PON2 coexisting with 13.1-dBm classical data traffic without adding fiber or architecture changes.

DOI: 10.1364/ofc.2026.w3k.3

Related papers

Integration of Quantum Key Distribution in a 20-km 32-user Coherent Passive Optical Network with Single Feeder Fiber

Jing Wang, Brian J. Rollick, Zhensheng Jia +1 more

For the first time, we demonstrated the integration of O-band polarization-encoding decoy-state BB84 QKD into a C-band 20-km single-feeder fiber 32-user coherent PON running at carrier-grade power levels without modifying existing PON infrastructures.

arXiv:2412.16104Optical Fiber Communication ConferenceJan 1, 20250 citations

Deployment Opportunities for DPS-QKD in the Co-Existence Regime of Lit GPON / NG-PON2 Access Networks

Nemanja Vokić, Dinka Milovančev, Bernhard Schrenk +2 more

We demonstrate cost-effective QKD integration for GPON and NG-PON2. Operation at 5.1×10−7 secure bits/pulse and a QBER of 3.28% is accomplished for a 13.5-km reach, 2:16-split PON, with 0.52% co-existence penalty for 19 classical channels.

arXiv:2004.12889Optical Fiber Communication ConferenceJan 1, 20203 citations

Demonstration of 17λ x 10 Gb/s C-Band Classical / DV-QKD Co-Existence Over Hollow-Core Fiber Link

Florian Honz, Florian Prawits, Obada Alia +11 more

We successfully integrate coherent one-way QKD at 1538 nm in a 7.7 km long hollow-core fiber link with 17 EDFA-boosted C-band data channels from 1540.56 to 1558.17 nm, aggregating a power of 11 dBm. QKD operation proves successful despite the wideband layout of classical channels.

arXiv:2210.00233Oct 1, 20220 citations

Experimental Demonstration of 374.4 Tbps Classical Communications Coexisting with Quantum Key Distribution over 100 km 7-Core Fiber

Weiwen Kong, Tianqi Dou, Zhenhua Li +10 more

We experimentally demonstrate QKD coexistence with 374.4 Tbps classical communications over 100 km 7-core fiber for the first time, achieving 28 dBm coexistence power and about 4 kbps secure key rate, enabling scalable QKD deployment.

Optical Fiber Communication ConferenceJan 1, 20260 citations

Integration of QKD in WDM networks

Paolo Martelli, Alberto Gatto, Marco Brunero +4 more

The theme of the integration of Quantum Key Distribution (QKD) in existing WDM optical networks will be discussed. Some evaluations about a reduced-cost implementation of BB84 protocol for QKD will be presented, where a QKD channel in O band is added to classical C-band WDM channels in the same fiber.

International Conference on Optical Network Design and Modeling (ONDM)Jun 28, 20213 citations

Coexistence Transmission of 33.4-Tb/s O-band Coherent Classical Channels and a C-band QKD Channel over 80 km

Shohei Beppu, Daniel J. Elson, Shinya Murai +5 more

A record data transmission capacity of 33.4 Tb/s over 80 km is achieved in quantum-classical channel coexistence transmission by multiplexing 13.1-THz O-band coherent classical channels with a C-band DV-QKD channel. © 2025 The Author(s)

Optical Fiber Communication ConferenceJan 1, 20257 citations