R&D Photonics

How does it work in practice?

Imagine sending an 8K movie from New York to Tokyo in milliseconds. Copper cable can't come close — it heats up, loses signal, and has limited bandwidth. Optical fiber, on the other hand, guides light with minimal loss (~0.2 dB/km) and can carry hundreds of terabits per second through a single strand thinner than a human hair.

At the transmitter, a precision laser generates a coherent beam of light. A photonic modulator encodes digital data onto the phase, amplitude, or frequency of that light — like an ultra-fast Morse code. The light travels through the fiber and, at the destination, a photodetector converts the photons back into electrical bits.

Why photonics for data communications?

• Speed of light — literally: 200,000 km/s in fiber — intercontinental latency under 100 ms.
• WDM — many channels, one fiber: technique that sends dozens of different wavelengths simultaneously, multiplying capacity without new cables.
• Immune to electromagnetic interference: glass fiber neither emits nor picks up electrical noise — ideal for industrial environments and dense data centers.
• Exponential scale: every video call, data stream, cloud AI job, and global financial transaction passes through a photonic link at some point.