Postfabrication optimization of an autoregressive planar waveguide lattice filter

Christi K. Madsen, Jian Zhao

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Narrow-band planar waveguide filters are sensitive to fabrication errors that make it difficult to realize multistage filters successfully and maintain tight center wavelength tolerances unless a tuning technique is available. An analysis algorithm combined with waveguide heaters has been successfully used to demonstrate that fabrication errors can be compensated in an autoregressive (AR) lattice architecture that makes it possible to concatenate conveniently multiple stages and to achieve higher-order filter functions. Compensation of fabrication errors on filter functions for a second- and third-order AR lattice filter is presented, and issues related to the application of the analysis algorithm are discussed. In combination with postfabrication tuning of the coupling ratios, the analysis algorithm will allow complete control of the filter function after fabrication.

Original languageEnglish (US)
Pages (from-to)642-647
Number of pages6
JournalApplied Optics
Volume36
Issue number3
DOIs
StatePublished - Jan 20 1997

Fingerprint

Planar waveguides
waveguides
filters
Fabrication
optimization
fabrication
Tuning
Waveguide filters
tuning
waveguide filters
Waveguides
heaters
narrowband
Wavelength
wavelengths

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Cite this

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Postfabrication optimization of an autoregressive planar waveguide lattice filter. / Madsen, Christi K.; Zhao, Jian.

In: Applied Optics, Vol. 36, No. 3, 20.01.1997, p. 642-647.

Research output: Contribution to journalArticle

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