Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/169593
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Recent developments in dual-wavelength DFB waveguide lasers fabricated by femtosecond laser pulses
International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim (August 28 - September 1, 2011 : Sydney)
Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics (Pacific Rim IQEC/CLEO 2011) incorporating ACOLS and ACOFT, Sydney, New South Wales, Australia, 28 August - 01 September 2011, p.1349-1350
We report a dual-wavelength (DW) distributed feedback (DFB) waveguide laser based on a symmetric periodically sampled grating fabricated in Yb-doped phosphate glass, using the femtosecond laser direct-write technique. The experimental results show that the peak spacing must be larger than 10 nm for stable operation. For improvement of the lasing performance, an asymmetric sampled grating structure is proposed such that a DW-DFB waveguide laser with 40 pm peak spacing is possible.