optical-communication

Move files between devices with a screen and a camera — offline optical transfer of RVF cognitive containers and WASM artifacts over animated QR codes. Mobile-first, no network, no accounts, SHA-256 verified.

Short-reach Optical Communication: A Real-world Task for Neuromorphic Hardware

Agents delivered by light: an LLM compiles a tiny program off-chip and beams it by screen-light to a radio-less Arduino that runs it forever, offline. Live at beam-claw.com

Conceptual radiation-tolerant silicon photonic inter-satellite optical transceiver with redundant primary/backup paths, radiation monitoring, GDS layout generation using gdsfactory, and first-order optical link budget analysis.

Screen-to-camera optical modem: 33 KB/s file transfer via light, adaptive OFDM with per-carrier bit loading, zero-install browser receiver

Procedural Python simulator for an 8-channel WDM-RoF link over C+L bands for 5G fronthaul — models BER, Q-factor, SNR, capacity, and throughput across fiber lengths and bit rates without needing OptiSystem/VPI.

Air-gapped optical file transfer via screen-to-camera color modulation. Implements rateless Fountain codes (Luby Transform), real-time homography rectification, and zero-copy Web Worker CV in pure TypeScript.

Closed-loop educational lab for low-contrast optical QR signaling and offline reconstruction

Air-gapped file transfer over light — a file crosses as an animated cell grid on a screen, read by a camera. No network, no Bluetooth, no pairing. Not QR.

Adaptive star-centroiding algorithm selection and stress-test benchmark under simulated spaceborne noise.

PrismShare Code: an open colour 2D barcode specification

Send data screen-to-camera as a fountain of animated QR codes. An offline-first PWA optical channel — ECDH-encrypted, systematic-fountain-coded — that works between any two screens with no network and nothing to pair. Pluggable transmission approaches you can race for speed.

LightLink — phone-to-phone optical communication via screen flash and camera. JavaScript web app for offline device-to-device data transfer

Simulation of secret key rate for satellite based, phase matched quantum key distribution under realistic noise and channel conditions.

光だけでファイルを渡す。ネットワークもペアリングも不要な画面→カメラのファイル転送 (Fountain code + 独自コード形式)

Research test bench for characterizing real-world screen-to-camera optical data channels.

A WDM (Wavelength Division Multiplexing) based optical communication link simulator. Change parameters interactively and analyse the outputs in real time.

Elephint is an electronics-photonics integration company building integrated photonic systems-on-a-chip (SoC) technologies. Its focus areas span photonic integrated circuits, silicon photonics, free-space optical communication, fiber optics, optical amplifiers, coherent beam combining, wavefront control, photonic signal processing, photonic…

Send a file from one screen to another device's camera. No network, no pairing, no install. 229.7 KB/s hand-held, bit-exact.