Saile Ackerman LLC
Polarization rotator for thermally assisted magnetic recording
A process sequence for forming a waveguide structure with a light polarization rotator section that converts transverse electric light from a TE light source to transverse magnetic light which is subsequently coupled to a plasmon generator (PG) is disclosed. The light polarization rotator section has a length determined by TE LD light wavelength, and the effective mode index of the two orthogonal fundamental modes, and a slope is formed in one side of the symmetric structure with a 45 degree angle with respect to a bottom surface. Offsets that narrow the cross-track width may be formed on the two sides of the light polarization rotator section to improve symmetry for higher TE to TM polarization conversion efficiency.
Headway Technologies, Inc.
G Y G G G G G G
G02B Y10T G02B G02B G11B G11B G11B G11B
additional additional additional inventional inventional additional inventional inventional
Shigeki Hiroyuki Xuhui Yoshitaka
Tanemura Ito Jin Sasaki