Lumen Fabric R3 — now shipping

Light-speed fabric for compute that lives everywhere

Temytch builds silicon-photonic interconnect and edge inference hardware that stitch scattered racks, factory floors and metro sites into one coherent compute plane — with deterministic latency measured in hundreds of nanoseconds, not milliseconds.

Deployed across 41 metro regions · 99.995% measured fabric availability

Fabric Console · Region EU-C2● live
SITE-01 SITE-02 SITE-03 SITE-04
Fabric RTT382 ns
Per-port1.6 Tb/s
Lanes up128/128
  • Northwind Grid Operations
  • Halden Robotics
  • Cassini Imaging Labs
  • Meridian Freight Systems
  • Kepler Bioinformatics
  • Arclight Semiconductors
  • Vantage Metro Networks
  • Solace Energy Trading
Platform

Three layers, one coherent plane

Photonics in the path, silicon at the edge, and a control plane that treats a hundred sites as a single scheduling domain.

Layer 01 · Optics

Lumen Fabric

A passive-core photonic switch that keeps traffic in the optical domain end to end. No packet buffering, no queue variance — just wavelength-routed lanes.

  • 1.6 Tb/s per port across 128 lanes
  • Sub-400 ns cross-fabric round trip
  • Hitless wavelength re-provisioning
Layer 02 · Silicon

Prism Edge Nodes

Half-depth inference nodes built for cabinets that were never meant to hold accelerators. Rated for 45 °C ambient and unattended sites.

  • Optical I/O on the package, not the faceplate
  • 310 TOPS/kW sustained at INT8
  • Sealed, filter-free, conduction-cooled
Layer 03 · Control

Conductor

The scheduler that decides where a workload should physically run, then lights the wavelength path to get it there before the first token is emitted.

  • Latency-aware placement across regions
  • Per-lane telemetry at 1 kHz
  • Declarative topology, versioned and diffable
382 nsMedian cross-fabric round trip, metro ring
62%Lower energy per bit vs. electrical switching
41Metro regions with fabric presence
99.995%Measured fabric availability, trailing 12 months
Technology

Why we kept the light

Every optical-to-electrical conversion costs energy and adds jitter. Lumen Fabric removes the conversions between the endpoints instead of trying to make them faster.

01

Wavelength assignment

Conductor allocates a dedicated wavelength pair between two endpoints. The path is reserved end to end, so contention never becomes queueing delay.

02

Passive optical routing

Traffic crosses a micro-ring resonator array with no active switching stage. Power draw is set by the laser plant, not by the traffic it carries.

03

On-package reception

Light lands on a photodetector bonded beside the accelerator die. Data reaches on-chip memory without ever touching a NIC or a PCIe root complex.

04

Closed-loop calibration

Thermal drift is corrected 1,000 times a second from per-lane telemetry, which keeps bit error rates flat across a 60 °C swing in an unconditioned cabinet.

Lane telemetry · 60 s windowBER 2.1e-15
THROUGHPUT / Tb·s⁻¹ t → 60 s
Jitter p99.9±4.7 ns
Optical budget3.1 dB
Hardware

Current generation

Two fabric switches and two node classes. Everything shares the same optical backplane and the same management interface.

ModelFabric capacityPort latencyTypical draw
Lumen F8 · fabric switch25.6 Tb/s84 ns640 W
Lumen F32 · fabric switch102.4 Tb/s91 ns1,850 W
Prism E1 · edge node2 × 1.6 Tb/s38 ns780 W
Prism E4 · dense node8 × 1.6 Tb/s38 ns2,400 W
Aperture T2 · optical tappassive< 2 ns11 W
We moved our anomaly detection off the regional cloud and onto four Prism nodes sitting in substations. Round-trip time went from eleven milliseconds to under one, and we stopped shipping raw sensor data across the country entirely.
Ines Roth · VP Infrastructure, Northwind Grid Operations
Company

Built by people who missed deadlines in fabs

Temytch started in a shared photonics lab in 2019, with the unglamorous goal of making optical interconnect boring enough to put in a roadside cabinet.

ZürichHeadquarters & photonics lab
AustinSystems engineering
SingaporeManufacturing & test
TallinnControl-plane software
  • 2019

    First light

    A four-lane micro-ring test bench holds a stable link for 72 hours. The team leaves the university lab three months later.

  • 2021

    Lumen F1

    First production switch ships to two metro network operators. 3.2 Tb/s, one rack unit, and a firmware stack we have since rewritten twice.

  • 2023

    On-package optics

    Prism E1 moves the photodetector onto the accelerator package, cutting node-side latency by an order of magnitude.

  • 2026

    Fabric R3

    241 people, 41 metro regions, and a fabric that has run a full year without a region-wide interruption.

Bring the compute to where the data already is

Our field engineers will walk your topology, model the latency budget, and tell you honestly whether photonics is the right answer for it.

hello@temyt4.tech · Bahnhofquai 12, 8001 Zürich