Femtosecond Laser Inscription of Low Insertion Loss Waveguides in $Z$-Cut Lithium Niobate
| Autor: | Nicholas D. Psaila, Giulio Cerullo, N. Chiodo, Ajoy K. Kar, Roberto Osellame, Robert R. Thomson, Henry T. Bookey |
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| Rok vydání: | 2007 |
| Předmět: |
Fabrication
Materials science Coupling loss business.industry Lithium niobate Fresnel equations Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Optics chemistry law Femtosecond Insertion loss Optoelectronics Electrical and Electronic Engineering business Waveguide |
| Zdroj: | IEEE Photonics Technology Letters. 19:892-894 |
| ISSN: | 1041-1135 |
| Popis: | A low insertion loss waveguide is fabricated in z-cut lithium niobate using femtosecond laser waveguide inscription. To fabricate a waveguide exhibiting both low propagation and coupling losses, we used the multiscan fabrication technique to control the size of the waveguide cross section. A minimum insertion loss of only 3.5 dB at 1550 nm was measured for the 18-mm-long waveguide when directly coupled to Corning SMF-28 fibers. Of this 3.5dB, we attribute 2.1 dB to coupling losses, 1.1 dB to propagation losses, and 0.3 dB to Fresnel reflections |
| Databáze: | OpenAIRE |
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