---
res:
  bibo_abstract:
  - Spectral filters are widely used in sensing and communicating with light, such
    as for separating wavelength channels in communications or sensing the specific
    spectra of some object or material of interest. The filter function is, however,
    often fixed, and precise filtering can require precise manufacturing. We propose
    an approach to integrated optical spectral filtering that allows arbitrary programmability,
    can compensate automatically for imperfections in filter fabrication, allows multiple
    simultaneous and separately programmable filter functions on the same input, and
    can configure itself automatically to the problem of interest, for example, to
    filter or reject multiple arbitrarily chosen frequencies. The approach exploits
    splitting the input light into an array of multiple waveguides of different lengths
    that then feed a programmable interferometer array that can also self-configure.
    It can give a spectral response similar to arrayed waveguide gratings but offers
    many other filtering functions, as well as supporting other structures based on
    non-redundant arrays for precise spectral filtering. Simultaneous filtering also
    allows an automatic measurement of the temporal coherency matrix and physical
    separation into the Karhunen–Loève expansion of temporally partially coherent
    light fields. With this approach, a wide range of spectral operations can be controllably,
    automatically, and precisely performed by an integrated photonic device with simple
    programmability.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: David A. B.
      foaf_name: Miller, David A. B.
      foaf_surname: Miller
  - foaf_Person:
      foaf_givenName: Charles
      foaf_name: Roques-Carmes, Charles
      foaf_surname: Roques-Carmes
      foaf_workInfoHomepage: http://www.librecat.org/personId=e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  - foaf_Person:
      foaf_givenName: Carson G.
      foaf_name: Valdez, Carson G.
      foaf_surname: Valdez
  - foaf_Person:
      foaf_givenName: Anne R.
      foaf_name: Kroo, Anne R.
      foaf_surname: Kroo
  - foaf_Person:
      foaf_givenName: Marek
      foaf_name: Vlk, Marek
      foaf_surname: Vlk
  - foaf_Person:
      foaf_givenName: Shanhui
      foaf_name: Fan, Shanhui
      foaf_surname: Fan
  - foaf_Person:
      foaf_givenName: Olav
      foaf_name: Solgaard, Olav
      foaf_surname: Solgaard
  bibo_doi: 10.1364/optica.557630
  bibo_issue: '9'
  bibo_volume: 12
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2334-2536
  dct_language: eng
  dct_publisher: Optica Publishing Group@
  dct_title: Universal programmable and self-configuring optical filter@
  fabio_hasPubmedId: '11385580'
...