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We demonstrate ultrafast all-optical switching in femtosecond laser inscribed nonlinear directional couplers in gallium lanthanum sulphide operated at 1.55 μm. We report on the evaluation of the nonlinear refractive index… Click to show full abstract
We demonstrate ultrafast all-optical switching in femtosecond laser inscribed nonlinear directional couplers in gallium lanthanum sulphide operated at 1.55 μm. We report on the evaluation of the nonlinear refractive index of the waveguides forming the directional couplers by making use of the switching parameters. The nonlinear refractive index is reduced by the inscription process to about 4-5 times compared to bulk material.
Keywords:
laser inscribed;
lanthanum sulphide;
nonlinear refractive;
gallium lanthanum;
refractive index
Journal Title: Applied optics
Year Published: 2017
Link to full text (if available)
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Journal Title: Applied optics
Year Published: 2017
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!