Title:
【発明の名称】集積光学系のための色消しモードインデックスエレメント
Document Type and Number:
Japanese Patent JPH04505673
Kind Code:
A
Abstract:
Mode-index optical elements comprise an optical waveguide having a optical overlay of substantially uniform thickness. The contour of the overlay in the plane of the overlay controls the direction of propagation of radiation within the waveguide. According to the invention, mode-index optical elements are optimally achromatized (i.e., rendered as insensitive as possible to radiation wavelength changes) over a desired wavelength rqange by properly selecting the respective thicknesses and bulk refractive indices of the overlay and waveguide components. Specifically, such parameters are chosen so that, for a given waveguide substrate (e.g., quartz) and superstrate (e.g., air), the deviation of the ratio of the respective effective refractive indices of the waveguide element (NE) and waveguide material (NWG) from a mean or nominal value is minimized over the desired wavelength range of achromatization.
Inventors:
Brazzas, Jiyoung Sea
Application Number:
JP50715391A
Publication Date:
October 01, 1992
Filing Date:
March 04, 1991
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G02B6/122; G02B6/12; G02B6/124; (IPC1-7): G02B6/12
Attorney, Agent or Firm:
Yoshio Kawaguchi (4 outside)