OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 32 — Nov. 10, 2010
  • pp: 6340–6347

Comparative study of mid-infrared fibers for modal filtering

Romain Grille, Olga Caballero-Calero, Brahim Arezki, Tomer Lewi, Pierre Kern, Abraham Katzir, and Guillermo Martin  »View Author Affiliations


Applied Optics, Vol. 49, Issue 32, pp. 6340-6347 (2010)
http://dx.doi.org/10.1364/AO.49.006340


View Full Text Article

Enhanced HTML    Acrobat PDF (491 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We compare the filtering capabilities of two infrared fibers developed to achieve a high rejection ratio of the higher order modes in order to obtain compact modal filters devoted to stellar interferometry. Two types of double-clad fibers are studied: a fiber with a second thin absorbing cladding and a fiber with a second thick absorbing cladding closer to the fiber core; both are single mode around the CO 2 band ( 10.6 μm ). We present the single-mode spectral domain and the nulling capabilities of both fibers for different fiber lengths, comparing simulations with experimental results. We show that the filtering capabilities are improved when the absorbing clad is closer to the fiber core, as the propagation distance needed to filter out these modes is shorter. Thus, to obtain high rejection ratios in compact devices, an absorbing cladding close to the core of the fiber is compulsory in order to suppress cladding modes that could eventually recouple into the waveguide. We present an empirical model that allows determining the minimum filter length, considering only one effective leaky mode with low attenuation, which considerably simplifies the theoretical studies.

© 2010 Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.3060) Integrated optics : Infrared

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 7, 2010
Revised Manuscript: October 7, 2010
Manuscript Accepted: October 8, 2010
Published: November 9, 2010

Citation
Romain Grille, Olga Caballero-Calero, Brahim Arezki, Tomer Lewi, Pierre Kern, Abraham Katzir, and Guillermo Martin, "Comparative study of mid-infrared fibers for modal filtering," Appl. Opt. 49, 6340-6347 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-32-6340

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited