Integrated photonics enabling ultra-wideband fibre-wireless communication

Area of Science:

• Photonics and Telecommunication Engineering
• Integrated Optics
• Wireless Communication Systems

Background:

• Telecommunication systems face challenges in unifying ultrawide bandwidth and low latency due to bandwidth mismatches between fiber and wireless links.
• Existing architectures and hardware constraints limit high-speed, compatible transmission across fiber and wireless domains, hindering unified system design.
• The need for high-throughput-density, congestion-free fiber-wireless links in wideband-access scenarios remains a critical challenge.

Purpose of the Study:

• To present an ultra-wideband (UWB) integrated photonics scheme for shared-bandwidth fiber-wireless communication.
• To overcome the bandwidth mismatch and compatibility issues between fiber and wireless transmission domains.
• To demonstrate unprecedented data transmission capabilities and enable high-density, low-latency communication networks.

Main Methods:

• Development of an integrated photonics scheme utilizing electro-optic (EO) and optic-electro (OE) conversions with >250 GHz bandwidth.
• Implementation of a complex bidirectional gated recurrent unit (complex-biGRU) algorithm for data processing.
• Utilizing an all-optically assisted ultra-broadband wireless scheme for high-density access.

Main Results:

• Achieved ultrahigh single-lane data rates: 512 Gbps for short-reach fiber and 400 Gbps for wireless transmission.
• Demonstrated cross-architecture adaptability and compatibility between fiber and wireless links using the same devices.
• Successfully transmitted multichannel 8K video across 86 channels (138-223 GHz) in real-time, showcasing high-density access.

Conclusions:

• The proposed UWB integrated photonics scheme effectively bridges the bandwidth gap between fiber and wireless communication.
• The system enables ultrahigh data rates and high-density access, paving the way for future low-latency telecommunication networks.
• This unified approach holds significant potential for advancing high-speed, densified communication infrastructure.