Castor Optics is a Montreal-based leading manufacturer of double-clad fiber couplers. Since 2013, it, has been a key strategic partner of Thorlabs. Castor was founded by Caroline Boudoux, Nicolas Godbout, Normand Brais, and Alex Cable to commercialize the innovative fiber coupler technology developed in the laboratories of Prs. Caroline Boudoux and Nicolas Godbout. The team at Castor works closely with Thorlabs' Canada office to bring to market a broad range of fiber-based optical components for next-generation medical imaging devices and advanced instrumentation for use in the physical sciences.