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Optics Letters

Optics Letters


  • Vol. 29, Iss. 20 — Oct. 15, 2004
  • pp: 2351–2353

Wideband frequency modulation of a mode-locked fiber laser

F. K. Fatemi and J. W. Lou  »View Author Affiliations

Optics Letters, Vol. 29, Issue 20, pp. 2351-2353 (2004)

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We have demonstrated wideband frequency modulation of the frequency comb lines of a high-repetition-rate fiber laser. With a modulation frequency of only ∼10 kHz, we have generated modulation indices in excess of 250. Although internally modulated, the laser remains stable with 2-kHz linewidths, and thus the 10-kHz modulation sidebands are still clearly resolved even after propagation over several hundred kilometers. This unique characteristic is used for simultaneous measurement of propagation distances to 1-m resolution and velocities of less than 3 mm/s over a distance of greater than 50 km.

© 2004 Optical Society of America

OCIS Codes
(060.2630) Fiber optics and optical communications : Frequency modulation
(140.4050) Lasers and laser optics : Mode-locked lasers

F. K. Fatemi and J. W. Lou, "Wideband frequency modulation of a mode-locked fiber laser," Opt. Lett. 29, 2351-2353 (2004)

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