Interoperable CFP-DCO and CFP2-DCO Pluggable Optic Interfaces for 100G WDM Transmission

Co-Propagation of QKD & 6 Tb/s (60 × 100G) DWDM Channels With ∼17 dBm Total WDM Power in Single and Multi-Span Configurations

“…The power per channel is ~ +2 dBm in the 30 channels configuration and ~ -1 dBm with 60 channels which is in the range of the power per channel currently used in DWDM's 100 Gb/s transmissions. In [8] it is shown that a power per channel of 0 dBm allows the transmission of 60 WDM channels at 100 Gb/s up to 1200 km. In [9] the transmission of a 400 Gb/s channel in a WDM comb with 57 other 100 Gb/s channels over 300 to 400 km with a power per channel in the range -2 to +5 dBm is possible.…”

Co-propagation of 6 Tb/s (60* 100Gb/s) DWDM & QKD channels with ~17 dBm aggregated WDM power over 50 km Standard Single Mode Fiber

“…We have presented results for a period of about 20 hours, but measurements have been performed for several days and confirm the stability over time. The power per channel is ~ +2 dBm in the 30 channels configuration and ~ -1 dBm with 60 channels which is in the range of the power per channel currently used in DWDM 100 Gb/s systems [5]. References [5] and [6] show that a power per channel in the range [0-3]-dBm is optimal for WDM transmission at 100 or 400 Gb/s, making us confident in the co-propagation of several tens of WDM channels with the quantum channel in real field environment.…”

“…The power per channel is ~ +2 dBm in the 30 channels configuration and ~ -1 dBm with 60 channels which is in the range of the power per channel currently used in DWDM 100 Gb/s systems [5]. References [5] and [6] show that a power per channel in the range [0-3]-dBm is optimal for WDM transmission at 100 or 400 Gb/s, making us confident in the co-propagation of several tens of WDM channels with the quantum channel in real field environment. We also performed tests feeding the Bob to Alice direction with the DWDM channels and confirmed there was no modification of the SKR and QBER.…”

Applications of P4-based Network Programmability in Optical Networks

“…Experiments have shown the capability to cover even 1500km at 400Gb/s in a 75 GHzspaced DWDM System, using 16 Quadrature Amplitude Modulation (QAM) at 69 Gbaud, probabilistic constellation shaping, and soft-decision forward error correction [6]. In addition, excellent interoperability performance has been already achieved by DCO-CFP2 based on OpenROADM multi source agreement (MSA) [1]. The 400ZR coherent pluggable module based on the smaller QSFP-DD form factor (18.35 mm width) currently provides signal launch power of up to -10dBm and it is mainly designed for data center interconnections, covering single span distances of up to 120km.…”

“…In the last years, compact coherent transmission modules have emerged, moving from traditional 8RU modules to pluggable form factors such as CFP2-DCO and QSPF-DD [1]. Although some limitations still exist with the smallest modules, the trend clearly shows that in the next few years coherent pluggable modules may become the preferred technology particularly for metro-edge scenarios.…”