Conjunct Ltd: Lens Free Glass OSAs

Fibre-Lyte is a lens free optical sub-assembly on a glass substrate for deployment in demanding environments. This patented technology uses precise multi-layer tracks on borosilicate into which optical waveguides are processed. This configuration provides outstanding RF performance at 50G and a robust, stable optical performance over a wide temperature range.

OSA with Tx & Rx

On-die decoupling

Wafer scale production

OSA with Tx & Rx

Waveguides

Fibre-Lyte uses in-wafer waveguides as a robust alternative to complex and expensive lens assemblies.

No beam expansion.
Reduced cross talk.
Single and multimode support.

No air gaps for particle contamination.
No condensation ingress.
No CTE mismatch.

High-definition Tracks

Fibre-Lyte uses multi-layer wafer scale fabrication leading to finer tracks and layers than is possible in FR4.

Thick and thin film processing.
Improved definition.
Better RF control.

Tighter layer spacing than FR4.
Improved ground plane control.
Multiple materials on a single layer.

Flip-Chip

Flip-chip assembly avoids the use of wire bonds, improving RF performance at 50G and making the assembly mechanically robust.

Flip-chip assembly as standard.

Superior Thermal Management

Direct to die thermal path provides improved thermal management.

The heat spreader is mounted directly to the opto-electronic devices.
It efficiently spreads the heat from these devices on to an appropriate heat sink.
Allows use of higher power components due to optimised thermal path.