Recent papers published on this subject

Self-alignment of liquid crystals in three-dimensional photonic crystals -  S. Gottardo, M. Burresi, F. Geobaldo, L. Pallavidino, F. Giorgis, D.S. Wiersma, Physical Review E, 74 040702 (2006).

Rewriteble photonic circuits -  F. Intonti, S. Vignolini, V. Turk, M. Colocci, P. Bettotti, L. Pavesi, S.L. Schweizer, R. Wehrspohn, D.S. Wiersma, Applied Physics Letters, 89 211117 (2006).