2 λ switch

Abstract

We demonstrate an elastic multi-wavelength selective switch with up to two wavelength switching capability per crosspoint. We fabricated the switch in a silicon photonics foundry and demonstrated a 17 nm tuning range for ring resonators, with a mean path loss of 2.43 dB. This is a 70% reduction in path loss as compared to previous generations, and we demonstrate a high-speed pulse-amplitude-modulation-4 transmission at 111 Gbps through different paths of the switch.

Compact Wavelength Selective Crossbar Switch with Cascaded First Order Micro-Ring Resonators

“…We compare our results with other notable wavelength selective silicon photonic switches in Table 1. In this work, best and worst case path loss was worse than our best switch [7]. This was due to misalignment of the drop port spectrum peak of the cascaded ring resonators.…”

“…A wavelength selective switch (WSS) can switch multiple wavelengths from an input port to output port [2]. WSS on silicon are reported in [3][4][5][6][7][8][9][10][11][12]. Applications of these switches in HyperX datacenter topology is reported in [1].…”

Latest advances in high-performance light sources and optical amplifiers on silicon

“…It has been demonstrated that semiconductor MLLs can be used as comb sources for WDM systems to increase the transmission capacity [71] . MLLs can also be used as transmitters in WDM switching applications, where a WDM switch can either be single or multiwavelength selective [72,73] . By leveraging the QD on the Si platform, low noise and high channel count MLLs can be realized.…”