Near-lossless 2D semiconductor phase modulators using hybrid tungsten oxyselenide/graphene electrodes

Researchers from Nanyang Technological University, University of Chicago, University of Wisconsin, Chungnam National University, National Institute for Materials Science, MIT and Singapore University of technology and design have developed hybrid tungsten oxyselenide/graphene electrodes that enable near-lossless optical phase modulation in two-dimensional semiconductor devices. The work targets a long-standing trade-off in integrated photonics, where improving modulation efficiency typically increases optical loss, especially for graphene-based designs at telecommunication wavelengths.