Why speed-of-light vacuum transmission in satellite laser meshes beats terrestrial subsea fiber cables on intercontinental routes.
Light travels through optical glass fibers at approximately 200,000 kilometers per second due to the refractive index of silica (n ≈ 1.46). In the vacuum of space, laser light travels at 299,792 kilometers per second—almost 50% faster than in terrestrial fiber cables.
For long-distance routes—such as London to Singapore or New York to Tokyo—the straightest route follows a great circle arc through Low Earth Orbit. OISLMesh routes IP packets across four optical laser links per satellite, achieving round-trip transit times up to 35% lower than the fastest submarine fiber cables. ``` +-----------------------+ Vacuum Laser Link +-----------------------+ | Satellite Plane A, #4 | --------------------------------> | Satellite Plane B, #4 | | Velocity: c (300k km/s)| Inter-Plane OISL | Latency: -35% vs Fiber| +-----------------------+ +-----------------------+ | | v v +-----------------------+ +-----------------------+ | Ground Uplink (London)| | Ground Downlink (Tokyo)| +-----------------------+ +-----------------------+ ```
Unlike static terrestrial routers, low Earth orbit satellites move relative to adjacent orbital planes at up to 15 kilometers per second. OISLMesh uses predictive ephemeris-based routing tables, preemptively calculating link handover schedules to achieve zero packet loss across topological transitions.