CST Global Increases Laser Chip Inspection Capacity

CST Global, a wholly-owned subsidiary of Sivers IMA Holdings AB, reported that the company successfully installed and commissioned an Opto Systems VVSP4000, automatic pick and place, visual inspection system at its fabrication facility in Blantyre, Glasgow, UK. The machine performs visual inspections of both the top side and facets of laser diode chips.

CST Global added the Opto Systems VVSP4000 automatic pick, place, and inspection system to increase laser chip inspection capacity.

CST Global added the Opto Systems VVSP4000 automatic pick, place, and inspection system to increase laser chip inspection capacity.

Graeme Masterton, operations manager at CST Global, explained, “The Automatic pick and place, visual inspection machine increases our inspection capacity in line with other production processes and is fed from our recently commissioned, automatic bar stacker and automatic scribe and break machines.”

Masterton noted that the system increases the company’s automatic inspection capability by over 500,000 laser chips per month. He also indicated that the automatic VI machine picks one laser bar at a time from a tape and sorts out the working DFB laser chips on each bar, before placing them back onto either a tape or into a gel pack.

“The Automatic VI machine will recognize the laser ID number, with an option to record an image of each laser for reference. The process is repeatable and totally consistent, with a full audit trail. We can also track wafer batch quality, working with our key suppliers to help increase yield if required,” Masterton said.