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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 16 — Aug. 15, 2006
  • pp: 2489–2491

Saturated absorption spectroscopy of acetylene gas inside large-core photonic bandgap fiber

Rajesh Thapa, Kevin Knabe, Mohammed Faheem, Ahmer Naweed, Oliver L. Weaver, and Kristan L. Corwin  »View Author Affiliations

Optics Letters, Vol. 31, Issue 16, pp. 2489-2491 (2006)

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Saturated absorption spectroscopy is performed on the acetylene ν 1 + ν 3 band near 1532 nm inside photonic bandgap fibers of small ( 10 μ m ) and large ( 20 μ m ) core diameters. The observed linewidths are narrower in the 20 μ m fiber and vary from 20 to 40 MHz depending on pressure and power. Variations in the background light transmission, attributed by others to surface modes, are significantly reduced in the 20 μ m fiber. The optimum signal for use as a frequency reference in a 0.8 m long, 20 μ m diameter fiber is found to occur at about 0.5 torr for 30 mW of pump power. The saturation power is found by modeling the propagation and attenuation of light inside the fiber.

© 2006 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(230.3990) Optical devices : Micro-optical devices
(300.6460) Spectroscopy : Spectroscopy, saturation

ToC Category:

Original Manuscript: March 21, 2006
Revised Manuscript: May 5, 2006
Manuscript Accepted: May 7, 2006
Published: July 25, 2006

Rajesh Thapa, Kevin Knabe, Mohammed Faheem, Ahmer Naweed, Oliver L. Weaver, and Kristan L. Corwin, "Saturated absorption spectroscopy of acetylene gas inside large-core photonic bandgap fiber," Opt. Lett. 31, 2489-2491 (2006)

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