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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 17 — Sep. 1, 2006
  • pp: 2571–2573

Multistage high-order microring-resonator add–drop filters

Miloš A. Popović, Tymon Barwicz, Michael R. Watts, Peter T. Rakich, Luciano Socci, Erich P. Ippen, Franz X. Kärtner, and Henry I. Smith  »View Author Affiliations


Optics Letters, Vol. 31, Issue 17, pp. 2571-2573 (2006)
http://dx.doi.org/10.1364/OL.31.002571


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Abstract

We propose and demonstrate a multistage design for microphotonic add–drop filters that provides reduced drop-port loss and relaxed tolerances for achieving high in-band extinction. As a result, the first microring-resonator filters with a rectangular notch stopband in the through port (to our knowledge) are shown, with extinctions exceeding 50 dB . Reaching 30 dB beyond previous results, without postfabrication trimming, such extinction levels open the door to microphotonic notch circuits for spectroscopy, wavelength conversion, and quantum cryptography applications. Combined with a low-loss, high-index-contrast electromagnetic design in SiN and frequency-matched microring resonators, this approach led to the first demonstration of flattop microphotonic filters meeting the stringent criteria for high-spectral-efficiency integrated add–drop multiplexers. The 40 GHz wide filters show a 20 nm free spectral range, 2 dB drop loss, and suppression of adjacent channels by over 30 dB .

© 2006 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.5750) Optical devices : Resonators

ToC Category:
Integrated Optics

History
Original Manuscript: March 9, 2006
Revised Manuscript: May 12, 2006
Manuscript Accepted: May 23, 2006
Published: August 9, 2006

Citation
Miloš A. Popovíc, Tymon Barwicz, Michael R. Watts, Peter T. Rakich, Luciano Socci, Erich P. Ippen, Franz X. Kärtner, and Henry I. Smith, "Multistage high-order microring-resonator add-drop filters," Opt. Lett. 31, 2571-2573 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-17-2571

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