Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/144807
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- Title
- Direct laser written waveguide coupler with an optically tunable splitting ratio
- Related
- Frontiers in Ultrafast Optics : Biomedical, Scientific, and Industrial Applications (11th : 2011) (23 - 26 January 2011 : San Francisco, CA)
- Related
- Heisterkamp, Alexander; Neev, Joseph and Nolte, Stefan. Frontiers in ultrafast optics : biomedical, scientific, and industrial applications XI : 23-26 January 2011, San Francisco, California, United States, p.79250K-1-79250K-5
- DOI
- 10.1117/12.875959
- Related
- Proceedings of SPIE Vol. 7925
- Publisher
- Bellingham, Washington : SPIE
- Date
- 2011
- Author/Creator
- Ams, M
- Author/Creator
- Williams, R. J
- Author/Creator
- Withford, M. J
- Description
- The femtosecond laser direct-write technique was used to create a 2x2 single-mode waveguide coupler in Yb-doped borosilicate glass. Initial modelling demonstrates that a reversible change in splitting ratio at 800 nm of more than 20% is possible (i.e. 50:50 to 30:70) if a shift in refractive index of the order of 1×10⁻⁴ can be induced. Such a shift is expected to be achieved through resonant optical excitation at 976 nm of the ytterbium ions, which increases the refractive index through heating and the direct pumping of a saturable optical absorption.
- Description
- 5 page(s)
- Subject Keyword
- coupler
- Subject Keyword
- direct-write
- Subject Keyword
- Femtosecond laser
- Subject Keyword
- tuneable
- Subject Keyword
- waveguide
- Subject Keyword
- ytterbium
- Resource Type
- conference paper
- Organisation
- Macquarie University. Dept. of Physics and Astronomy
- Identifier
- http://hdl.handle.net/1959.14/144807
- Identifier
- ISBN:9780819484628
- Identifier
- ISSN:0277-786X
- Identifier
- mq_res-ext-2-s2.0-79953855858
- Language
- eng
- Full Text
- Reviewed
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