Send to

Choose Destination
See comment in PubMed Commons below
Appl Opt. 1999 Mar 20;38(9):1752-8.

Effect of fabrication errors in channel waveguide Bragg gratings.

Author information

  • 1Department of Electronic Engineering, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy.


The spectral performances of nonideal rectangular Bragg gratings, integrated in a rib waveguide, are analyzed by a multilayer approach based on the effective-index method. The effects of errors on the photolithographic definition of the grating, that is, period and shape, and of errors on the control of etching depth are investigated. Also the influence of the stitching error, which is unavoidable when the grating is realized by means of electron-beam photolithography, is addressed. A novel analytical approach that extends coupled-mode theory to the analysis of real gratings is also presented.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk