OptiCore

OptiCore makes optical transceivers, components that convert electrical signals into light pulses and back, enabling data to travel across fibre-optic networks, along with optical multiplexing devices that bundle multiple light-wavelength signals onto a single fibre.

Its customers include makers of mobile network base stations, broadband access equipment, and enterprise communications gear. Listed on KOSDAQ, Korea's tech-focused small-cap exchange, the company also operates a separate automation business that supplies platform screen doors for metro and rail stations and equipment for factory production lines.