140 Gb/s WDM Data Routing in a Lossless Strictly Non- Blocking SOA-Based Photonic Integrated 8×8 Space Switch

Abstract

We demonstrate 4×35 Gbps error-free WDM data routing in a lossless compact 8×8 InP optical space switch with 2 dB worst-case penalty. 10 dB IPDR within 1.5 dB power penalty is measured at 12.5 Gbps.

Compact 8×8 SOA-Based Optical WDM Space Switch in Generic InP Technology

“…At this input power we could observe the effect of gain saturation, especially at 35 Gb/s; however, the nonlinear phenomenon is not strong. We have already demonstrated an input power dynamic range (IPDR) of 10 dB within a 1.5 dB power penalty with 4 WDM channels (power varying from -5 dBm to 5 dBm at the lensed fiber inputs) at a 12.5 Gb/s line rate [28], showing that the input power variation can be tolerated by the switch, with application possible also in reconfigurable optical front-haul networks.…”

Lossless 1 × 4 Silicon Photonic ROADM Based on a Monolithic Integrated Erbium Doped Waveguide Amplifier on a Si3N4 Platform

“…Towards scalable photonic switching and wavelength routing functionalities, optical amplification elements need to be integrated with the switching matrix. Owing to the direct bandgap and inherent stimulated emission of III-V materials, early prototypes of lossless OCSs were integrating several Semiconductor Optical Amplifiers (SOAs) in 4×4 [21], 8×8 [22] and 16×16 [18] layouts on InP platform for nearly two decades and are more recently proposed as Add/Drop switches in Metro networks with channel-rates up to 40 Gb/s [24] [25]. Towards bridging the gain-properties of III-V materials with the large-integrability and cost-benefits of SiPho, arrays of SOAs can be hybridly-integrated next to SiPho switching matrices for DCs, demonstrating 4×4 [26] and 8×8 port counts [7][27] [28] with up to 33 Gbd channel-rates.…”