DRDO is seeking Indian industry participation in the development of an Omnilight Photonic Integrated Circuit, a microwave-photonics transceiver technology designed for next-generation radar systems. The project would replace conventional copper RF connections with RF-over-Fibre, allowing radar signals to travel through optical fibre. Converting RF signals into optical form could substantially reduce cable weight and improve resilience against electromagnetic interference and electronic warfare. The planned eight-channel Photonic Transceiver would combine electro-optical conversion, optical multiplexing, demultiplexing and digital communication functions within a compact chip. It is designed to operate from 0.5 GHz through 40 GHz, supporting several important radar frequency bands including X, Ku, K and Ka. The architecture could connect remotely located antenna arrays with central processors over kilometre-scale fibre links while maintaining signal quality. Optical communications also provide strong resistance to electromagnetic interference, while channel isolation exceeding 40 dB would help minimize unwanted interference between channels. The programme is significant beyond the immediate radar application because it could help establish domestic expertise in photonic-chip design, packaging and production. Such technology could contribute to future Indian radar systems that are lighter, more compact, more power-efficient and capable of handling higher-bandwidth signals.
