Satis RTC Photonics Systems - Precision Systems for Telecoms

Precision Systems For Telecoms

Satis RTC has developed a plasma-assisted electron beam vacuum deposition system that takes the production of optical filters for DWDM applications into a new realm.

By achieving higher deposition rates and film uniformity characteristics previously unheard of, Satis RTC has introduced the ability to produce DWDM filters faster and with higher yields than ever before.

These capapbilities have been achieved by introduction of two unique leading edge technologies developed within Satis RTC:

The Satis RTC plasma deposition source PDS boosts the kinetic energey of the e-gun generated evaporant molecules so that they impact upon the substrate surface.

The subsequent film growth under these conditions is denser than films deposited using non-assisted techniques. Consequently, adhesion is improved, refractive index is near that of the bulk material and the resultant coatings are unaffected by temperature and humidity variations.

Even though the evaporant deposits at a higher energy and is partially ionised by PDS, the process operates at room temperature and achieves material indices better than those obtained by non-assisted processes at 250 °C and above.

PDS also neutralises plasma space charge near the substrate edge to counteract film thickness variations often found in similar systems. These variations manifest themselves as edge fringing which reduces the DWDM filter yield from a single coated substrate.

To compensate for variation in spatial distribution of evaporant flux, EPMS was developed by Satis RTC. EPMS constantly examines the data flowing in from the distributed quartz crystal measurement system and the Optical Monitor for variation in evaporant plume spatial distribution. When the plume deviates from optimal, EPMS automatically adjusts the parameters governing the electron beam gun's sweep pattern, sweep frequency and even the height of the hearth to maintain evaporant conditions.

Precision Systems For Precision Optics

Satis RTC has developed a variety of new electron beam vacuum deposition systems based around the Satis 360 (right), 900 and 1200 chambers, both with and without plasma-assistance, that are truly 21st Century evaporators for the Precision Optics market sector.

In addition, older equipment - such as the Balzers BAK 600 pictured right - can be upgraded to modern standards with the installation of the following in-house technologies:

Contact details:

Satis RTC Photonics Systems
Turnpike Farm
Potton Road
Biggleswade
Bedfordshire
SG18 0EP
England

Tel. + 44 (0)1767 313067
Fax.+ 44 (0)1767 600331

Eml. sales@satisrtc.com