CST Global Adds InP Epitaxial Overgrowth to its Production Capability

Posted Sep 06, 2018 by

CST Global has added an in-house InP epitaxial overgrowth capability to its foundry production services. The process is critical to the manufacture of high-volume, DFB lasers used in world-wide, passive optical network (PON) markets. The successful implementation of this process is the result of a focused investment over the last year of approximately £ 500k (MSEK 6).

InP (Indium Phosphide) epitaxy is deposited using a vapor-phase epitaxy (VPE) process, applied by CST Global’s commercial, MOCVD (Metal Organic Chemical Vapour Deposition) reactor. According to Euan Livingston, VP Sales and Marketing at CST Global explains, adding InP epitaxial overgrowth to their foundry capability brings a critical production process in-house, where previously it was out-sourced. It not only mitigates production bottlenecks, but also reduces DFB laser production times.

Over the past year, CST Global has significantly increased the capacity of their factory in Blantyre, Scotland, to meet the high demand for DFB lasers used in PON markets. Epitaxial overgrowth is a challenging process to master and the company recognizes that the combined expertise of its development and operations teams has been essential to the successful introduction of this new process.

CST Global is a wholly-owned subsidiary of Sivers IMA Holdings AB