Fiber transmission for sub-500-fs pulses using a dispersion-compensating fiber

Abstract

We report transmission of 60-fs and 245-fs pulses, respectively, over 42-m and 2.5-km fiber links which consist of standard single-mode fibers (SMF) concatenated with dispersion-compensating fibers (DCF). The experiments using very short pulses (60 fs) over a short fiber length (42 m) demonstrate the ability to achieve simultaneous dispersion and dispersion slope compensation using this technique. Femtosecond spectral interferometry measurements of this 42-m link show that its residual dispersion slope is approximately six times lower than that of the dispersion-shifted fiber. Finally, to demonstrate that the dispersion-limited propagation distance is proportional to the cube of the pulsewidth, we transmit 245-fs pulses over a 2.5-km SMF-DCF link and achieve comparable pulse restoration as with the shorter fiber experiments.Index Terms-Dispersion compensation, dispersion measurement, spectral interferometry.

Femtosecond Pulse Delivery through Long Multimode Fiber Using Adaptive Pulse Synthesis

“…Furthermore, construction of an optical fiber net for femtosecond laser pulses will enable us to improve the operating efficiency of femtosecond lasers. Some types of fiber, such as single-mode fiber, 3) dispersion-compensating fiber, 4) and microstructure fiber, [5][6][7] were demonstrated to accomplish the fiber delivery. Solitons 8) are useful for propagating stable pulses.…”