Reference Platform

Passage 50

World's first 16-wavelength bidirectional optical link for CPO.

From Rings to Racks. Passage 50 is an evaluation platform that demonstrates Lightmatter’s photonic stack is ready for the data center. By combining our Passage PIC with standard XSR SerDes and our Guide ELS, Passage 50 demonstrates the world’s first reliable, high-bandwidth, 16-color bidirectional optical link.

Request Technical Brief View Specifications

Measured Efficiency

2.6

pJ / bit

Spectral Density

16λ

BiDi Link

800 Gbps bidirectional throughput per fiber strand.

16-Color BiDi

Lightmatter’s bidirectional (BiDi) DWDM link architecture is the first of its kind in a 3D integrated platform. By sending 16 distinct wavelengths of light in both directions simultaneously, we double the bandwidth density of traditional co-packaged optics.

See It In Action

Power Budget

By optimizing individual components across the 3D stack, Passage 50 achieves a level of efficiency once considered theoretically impossible for rack-scale optical links.

1.3 PIC
0.4 TXDRV
0.9 GUIDE 2
TOTAL: 2.6 pJ/bit

Density Benchmark

800 Gbps

16-wavelength bidirectional communication on a single fiber strand. Enabling 1.6 Tbps total chip bandwidth with unprecedented physical density.

Reliability Benchmark

< 1e-9

Demonstrated Bit Error Rate (BER) pre-FEC. Stable performance validated from 25°C to 85°C.

Rack-Scale Proof

The Passage 50 platform is designed for immediate integration into hyperscale evaluation environments, with racks sampling today.

Validation Stack

  • [+] Compliance Testing Support
  • [+] Real-time BER Analysis
  • [+] Polarization Scrambling Tests
  • [+] Racks Sampling Now

Industrial Grade

Precision engineered packaging for high-volume manufacturing readiness.

Thermal Delta

Stable operation under 80°C delta temperature cycling in production racks.

Hardware

Passage 50 Platform

The Passage 50 evaluation kit demonstrates rack-scale photonic integration with production-ready hardware sampling today.

Rack-Scale

Evaluation System

Production-ready rack integration sampling now

3D Photonics

Integrated Chip

16λ DWDM photonic integrated circuit

Validation

Test Platforms

Dual-board evaluation configuration

Technical Data Sheet

Ref: P50-EVK-SPEC-001

Technical Specifications

Link Architecture

1x Passage Link, 16-Color Bi-directional (BiDi)

Modulation

56 Gbps NRZ

SerDes Compatibility

Off-the-shelf XSR SerDes

Fiber Type

Single-Mode Fiber (SMF)

Efficiency

2.6 pJ/bit (Total Link)

Operating Range

25°C to 85°C (Validated)

Evaluate the Frontier

The Passage 50 EVK is sampling now. Partner with us to validate the world’s most efficient 3D photonic stack.

Request Technical Brief