WAVEGUIDE, METHOD OF FABRICATING THE SAME, LIGHT DELIVERY MODULE EMPLOYING THE WAVEGUIDE AND HEAT ASSISTED MAGNETIC RECORDING HEAD EMPLOYING THE BENDING WAVEGUIDE

摘要

A curved waveguide, a manufacturing method thereof, an optical transmission module using the curved waveguide, and an HAMR(Heat Assisted Magnetic Recording) head adopting the curved waveguide are provided to obtain a spot with the small size and the light intensity by the near field enhanced aperture structure like a C-shaped aperture and to batch-produce the optical transmission module together with the existing magnetic recording head by a low-temperature planar process. A curved waveguide(20) is composed of a core(22) having an output stage of the near field enhanced aperture structure emitting the enhanced near field light by changing the energy distribution of the incident light and a metal clad(21) for surrounding the core. The core is bent in a curved line. The curvature radius of the curved line is a resonant radius that the intensity of the transmitted light for a wavelength of the incident light is peak.