29 June 2015 Superficial waveguide splitters fabricated by femtosecond laser writing of LiTaO3 crystal
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Abstract
We report on Y-branch superficial depressed-cladding waveguides fabricated by femtosecond laser writing of MgO:LiTaO3 crystal. The cladding waveguides with a rectangular cross-section are single mode for both transverse electric and transverse magnetic polarization, and show good transmission properties at a telecommunication wavelength of 1.55  μm. Divergence angles as large as 2.6 deg are successfully achieved in the splitters with nearly equalized splitting ratios (1:1). The fabricated shallow structures are excellent photonic elements for optoelectronic applications.
Chen Cheng, Carolina Romero, Javier R. Vázquez Rodríguez Vázquez de Aldana, Feng Chen, "Superficial waveguide splitters fabricated by femtosecond laser writing of LiTaO3 crystal," Optical Engineering 54(6), 067113 (29 June 2015). https://doi.org/10.1117/1.OE.54.6.067113 . Submission:
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