Four Fixed O-Band WDM Channels for 100 Gbps and 200 Gbps IMDD Transmissions for VHSP

We assess Intensity Modulation and Direct Detection (IM/DD) for Very-High-Speed PON (VHSP), focusing on the transmission capabilities of 100 Gbps and 200 Gbps using four fixed O-band wavelengths. VHSP architectures offer a cost-effective way to deliver ultra-high data rates over shared infrastructures, effectively bridging the gap between nextgeneration wireless access points and core networks. The competitive advantage of leveraging existing 50G-PON technology allows us to achieve 200 Gbps without the complexities and costs associated with other candidate solutions such as coherent systems. We use simple optics with Distributed Feedback (DFB) or Externally Modulated Laser (EML)-Semiconductor Optical Amplifier (SOA), Avalanche Photodiode (APD), and Analog Feed Forward Equalizer (AFFE) at 25 and 50 Gbit/s over 4 fixedchannels, achieving error-free transmissions over 20 km SingleMode Fiber (SMF) with $\mathbf{> 3 2} \mathbf{dB}$ optical budget, despite FourWave Mixing (FWM) penalties.