Patent ID: 6125222
Filing Date: 2000-09-26
Classification: G02B,H01S

Abstract:
A fiber-coupled optical source, comprising:a broad area laser diode that, without external feedback, operates in multiple spatial modes for generating an optical beam having a beam profile and a wavelength;an optical fiber coupled to receive the optical beam and having a fiber profile;coupling optics coupled to receive the optical beam from the broad area laser diode and manipulate the beam profile of the optical beam to preferentially match a single spatial mode of the broad area laser diode to the fiber profile, wherein the coupling optics comprises first, second, and third lenses, and the first and third lenses are aspheric andfiber grating located within the optical fiber for providing a reflection at a predetermined wavelength for the single spatial mode such that the predetermined wavelength and the single spatial mode of the optical beam are stabilized.