We present optical designs allowing large mode area light guiding by ultrafast laser photoinscription of bulk fused silica. If usual concepts are based on large core and depressed cladding, evanescently coupled multicore waveguides with coherent mode superposition can be effective solutions, where the introduction of nanostructured defects determines additional polarization functions.
© 2013 Optical Society of America
Original Manuscript: February 4, 2013
Revised Manuscript: April 27, 2013
Manuscript Accepted: May 1, 2013
Published: May 28, 2013
G. Cheng, C. D’Amico, X. Liu, and R. Stoian, "Large mode area waveguides with polarization functions by volume ultrafast laser photoinscription of fused silica," Opt. Lett. 38, 1924-1926 (2013)