All of our Fiber Optic Light Sources are made in America by Optical Wavelength Labs (OWL). By producing high quality products for over 20 years, OWL is the WISE choice in fiber test equipment. OWL has established a global reputation for quality, consistently producing accurate, user-friendly, yet affordable test equipment. OWL’s factory, being located in America’s Heartland, has become well accepted globally in the fiber optics industry.