All-fiber grating-based higher order mode dispersion compensator for broad-band compensation and 1000-km transmission at 40 Gb/s

Control of dispersion in photonic crystal fibers

“…Higher order modes (HOMs), which naturally tend to show higher dispersion than the fundamental (LP 01 -like) mode, can be used as a basis for dispersion compensation. This has been demonstrated with conventional MCVD fibers, [28][29][30] and the dispersion can be enhanced by operation close to cut-off. The dual concentric core configuration is also appropriate for achieving a large negative dispersion of a chosen HOM with a suitable dispersion slope.…”

Conception, Realization, and Characterization of a Very High Negative Chromatic Dispersion Fiber

“…Thus one requires a fiber, which supports more than one mode at the operating wavelengths. Further, conversion of power from fundamental to a higher order mode and reconverting the same back to fundamental mode have not been an easy task though lately there have been a number of promising studies reported on this technique [14,15]. The virtual imaged phase array (VIPA) technique [11] utilizes convex or concave micromirrors to impart either negative or positive dispersion to a propagating pulse.…”

Implementation of Photonic True Time Delay Using High-Order-Mode Dispersion Compensating Fibers

“…1). Since HOM fibers exhibit dispersion coefficients much higher than those of regular dispersion compensating fibers (DCFs), [5], [6], HOM-DCMs should be able to implement TTD with significantly better tolerance of the RF delay to temperature variations. Moreover, due to their relatively large effective area, HOM-DCMs offer much higher tolerance to nonlinear optical interactions [7].…”

“…Since this thermal sensitivity is proportional to while equals the product of and , maximizing the fiber dispersion will minimize the fiber length and its associated . Highly dispersive high-order-mode (HOM) fibers have been recently introduced in the form of dispersion compensating modules (HOM-DCMs), [5], [6]. They comprise a length of highly dispersive HOM fiber and two single-mode fiber pigtailed mode transformers (see the box in Fig.…”