A distributed feedback laser is fabricated in Er3+-doped photonic crystal fibre. Preferential single-mode lasing is obtained with no special consideration of polarisation issues. The results demonstrate practical implementation of a multi-photon writing process for complex structures in these optical fibres. No hydrogen loading and no germanium are involved. © 2005 Optical Society of America.
Groothoff, N., Canning, J., Ryan, T., Lyytikainen, K., & Inglis, H. (2005). Distributed feedback photonic crystal fibre (DFB-PCF) laser. Optics Express, 13(8), 2924-2930. https://doi.org/10.1364/OPEX.13.002924