Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 21,
  • Issue 3,
  • pp. 837-
  • (2003)

Tunable Spectral Slicing Filters for Dense Wavelength-Division Multiplexing

Not Accessible

Your library or personal account may give you access

Abstract

A new type of polarization independent guided-wave optical filter with etalon-like spectral response for wavelength-division multiplexing (WDM) is described and analyzed. A four-port integrated optic device performs the spectral slicing (wavelength interleaving/deinterleaving) function of selecting equally spaced frequency channels from a group of incident WDM channels. Spectral selection is based upon codirectional transverse electric (TE) <-> transverse magnetic (TM) conversion induced by N equally spaced coupling regions in a single mode optical waveguide. A matrix formulation is used to determine the TE <-> TM coupling strengths which yield N-1 equally spaced nulls between adjacent selected frequencies, for N as high as 16. Spectral response is calculated for polarization coupling regions of infinitesimal length as well as for polarization coupling induced by gratings of finite extent. Lithium niobate, due to its high birefringence, is an ideal substrate material for dense WDM filters. Polarization coupling can be induced by a sparse grating of an overlay material such as fused silica. The spectral response can be tuned at submicrosecond speeds by an applied electric field which alters the waveguide birefringence, and hence the optical frequency at which near-complete polarization conversion occurs. A reflective design to make more effective use of the available substrate dimension is described. Single channel selection over a wide spectral range can be achieved by cascading two of the filters in series.

[IEEE ]

PDF Article
More Like This
Polarization-independent tunable spectral slicing filter in Ti:LiNbO3

Renato C. Rabelo, Ohannes Eknoyan, and Henry F. Taylor
Appl. Opt. 50(4) 562-570 (2011)

Flattop tunable dense-wavelength division-multiplexing filter-modulator

Luc Gilles and Phuc Tran
J. Opt. Soc. Am. B 21(5) 903-907 (2004)

Substrate-strain-induced tunability of dense wavelength-division multiplexing thin-film filters

Rémy Parmentier and Michel Lequime
Opt. Lett. 28(9) 728-730 (2003)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved