公开(公告)号：US20170307785A1

公开(公告)日：2017-10-26

申请号：US15495265

申请日：2017-04-24

Applicant: Lumentum Operations LLC

Inventor： John Michael Miller ,  Joel MILGRAM ,  Karen Denise HENDRIX ,  Michael O’LEARY ,  Hery DJIE ,  Lu TIAN ,  Paul COLBOURNE

IPC: G02B1/12 ,  G02B5/30 ,  G02B1/11 ,  G02B5/18 ,  G03F7/00 ,  G02B27/28

CPC classification number: G02B1/12 ,  G02B1/11 ,  G02B5/1809 ,  G02B5/3083 ,  G02B27/286 ,  G03F7/0005

Abstract: A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.