1. Ahn, S.W., Lee, K.D., Kim, D.H., Lee, S.S.: Polymeric wavelength filter based on a Bragg grating using nanoimprint technique. IEEE Photon. Technol. Lett. 17, 2122–2124 (2005)
2. Aubry, C., Trigaud, T., Moliton, J.P., Chiron, D.: Polymer gratings achieved by focused ion beam. Synt. Met. 127, 307–311 (2002)
3. Barkman, O., Jeřábek V., Prajzler, V.: Optical splitters based on self-imaging effect in multi-mode waveguide made by ion exchange in glass. Radioengineering 22, 352–356 (2013)
4. Christian, N.L., Passauer, L.K.: Fiber Optics Component, Design, Fabrication, Testing Operation, Reliability and Maintainability. William Andrew Publishing, Norwich (1990)
5. Eldada, L., Blomquist, R., Maxfield, M., Pant, D., Boudoughian, G., Poga, C., Norwood, R.: Thermooptic planar polymer Bragg grating OADMs with broad tuning range. IEEE Photon. Technol. Lett. 11, 448–450 (1999)