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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 25 — Dec. 13, 2004
  • pp: 6335–6340

Optically controlled Sagnac loop comb filter

K. L. Lee, M. P. Fok, S. M. Wan, and C. Shu  »View Author Affiliations

Optics Express, Vol. 12, Issue 25, pp. 6335-6340 (2004)

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We propose a new type of dynamically tunable birefringence comb filter based on a semiconductor optical amplifier Sagnac loop interferometer. By optically modulating the birefringence of the amplifier, we demonstrate a tuning of the output wavelengths. The shift of wavelength increases monotonically with the power of the control light until saturation occurs. The tuning relation is independent of the comb spacing governed by the length and birefringence of the polarization maintaining fiber inside the loop. A tuning range up to 59% of the comb spacing has been achieved at 18.5 dBm input power.

© 2004 Optical Society of America

OCIS Codes
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(260.1440) Physical optics : Birefringence
(350.2460) Other areas of optics : Filters, interference

ToC Category:
Research Papers

Original Manuscript: November 12, 2004
Revised Manuscript: December 3, 2004
Published: December 13, 2004

K. Lee, M. Fok, S. Wan, and C. Shu, "Optically controlled Sagnac loop comb filter," Opt. Express 12, 6335-6340 (2004)

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  1. D. H. Kim, and J. U. Kang, ???Sagnac loop interferometer based on polarization maintaining photonic crystal fiber with reduced temperature sensitivity,??? Optics Express 12, 4490-4495 (2004). [CrossRef] [PubMed]
  2. L. R. Chen, ???Tunable multiwavelength fiber ring lasers using a programmable high-birefringence fiber loop mirror,??? IEEE Photon. Technol. Lett. 16, 410-412 (2004). [CrossRef]
  3. Y. W. Lee, J. Jung, and B. Lee, ???Multiwavelength-switchable SOA-fiber ring laser based on polarizationmaintaining fiber loop mirror and polarization beam splitter,??? IEEE Photon. Technol. Lett. 16, 54-56 (2004). [CrossRef]
  4. Y. W. Lee, K. J. Han, B. Lee, and J. Jung, ???Polarization-independent all-fiber multiwavelength-switchable filter based on a polarization-diversity loop configuration,??? Optics Express 11, 3359-3364 (2003). [CrossRef] [PubMed]
  5. X. P. Dong, S. P. Li, K. S. Chiang, M. N. Ng, and B. C. B. Chu, ???Multiwavelength erbium-doped fiber laser based on a high-birefringence fiber loop mirror,??? Electron. Lett. 36, 1609-1610 (2000). [CrossRef]
  6. R. M. Sova, C. S. Kim, and J. U. Kang, ???Tunable all-fiber birefringence comb filter,??? Technical digest, OFC 2002, ThGG61, Anaheim, USA, (Optical Society of America, Washington, D.C., 2002).
  7. N. J. C. Libatique, and R. K. Jain, ???A broadly tunable wavelength-selectable WDM source using a fiber sagnac loop filter,??? IEEE Photon. Technol. Lett. 13, 1283-1285 (2001). [CrossRef]
  8. X. Fang, and R. O. Claus, ???Polarization-independent all-fiber wavelength-division multiplexer based on a Sagnac interferometer,??? Opt. Lett. 20, 2146-2148, (1995). [CrossRef] [PubMed]
  9. H. Soto, D. Erasme, and G. Guekos, ???Cross-polarization modulation in semiconductor optical amplifiers,??? IEEE Photon. Technol. Lett. 11, 970-972 (1999). [CrossRef]
  10. H. Soto, J. C. Dominguez, D. Erasme, and G. Guekos, ???Demonstration of an all-optical switch using crosspolarization modulation in semiconductor optical amplifiers,??? Micro. and Optical Technol. Lett. 29, 205-208 (2001). [CrossRef]
  11. R. J. Manning, A. Antonopoulos, R. L. Roux, and A. E. Kelly, ???Experimental measurement of nonlinear polarization rotation in semiconductor optical amplifiers,??? Electron. Lett. 37, 229-231 (2001). [CrossRef]
  12. M. F. C. Stephen, M. Asghari, R. V. Penty, and I. H. White, ???Demonstration of ultrafast all-optical wavelength conversion utilizing birefringence in semiconductor optical amplifiers,??? IEEE Photon. Technol. Lett. 9, 449-451 (1997). [CrossRef]
  13. M. P. Fok, K. L. Lee, and C. Shu, ???Dynamic waveband switching in semiconductor optical amplifier fiber ring laser based multi-wavelength source???, Technical digest, ECOC 2004, Mo3.4.6, Stockholm, Sweden, (2004).
  14. Y. W. Lee, K. J. Han, J. Jung, and B. Lee, ???Polarization-independent tunable fiber comb filter,??? IEEE Photon. Technol. Lett. 16, 2066-2068 (2004). [CrossRef]

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