Raman soliton-induced time focusing and time-convex mirror in photonic crystal fiber

Abstract

Temporal reflection can lead to the focusing, defocusing, or collimation of optical pulses. Here, a method is proposed for manipulating optical pulse characteristics using time surface mirrors. This study investigates solitons can be used to manipulate probe pulses for temporal focusing when a Gaussian pulse reflects from a temporal concave mirror formed at the trailing edge of a soliton. Furthermore, we discover approximate temporal total internal reflection and significant amplitude oscillations when the probe pulse undergoes temporal reflection from a temporal convex mirror formed by the soliton. These results can be utilized to create Raman soliton-induced time waveguides and realize light–light control, which showcase wide applications in the field of optics, particularly in photonics and the development of distinctive temporal waveguides, and providing insights into pulse compression and broadening.