Monolithic Interferometers Using Gemini Fiber

Gemini fibers are used to fabricate monolithic interferometers. The thermal stability of a monolithic Michelson interferometer is found to be superior to that of a conventional fiber ribbon interferometer. The fabrication of fused couplers, fiber Bragg gratings, and a broadband Mach-Zehnder add-drop multiplexer are demonstrated using the novel fiber.