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- Title
Superficial waveguide splitters fabricated by femtosecond laser writing of LiTaO<sub>3</sub> crystal.
- Authors
Chen Cheng; Romero, Carolina; Vázquez de Aldana, Javier R.; Feng Chen
- 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.
- Subjects
FEMTOSECOND lasers; LITHIUM tantalate; NANOFABRICATION; BEAM splitters; OPTOELECTRONICS
- Publication
Optical Engineering, 2015, Vol 54, Issue 6, p1
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.OE.54.6.067113