H. Krug, F. Tiefensee, P. Oliveira, and H. Schmidt, Organic-inorganic composite materials: optical properties of laser patterned and protected coated waveguides, SPIE, Sol-Gel optics II, pp.448-455, 1758.
DOI : 10.1117/12.132036

K. Li, E. J. Salley, P. Melman, M. J. Tabasky, J. Zhao et al., Self-aligned ormosil waveguide devices, SPIE, Organic-Inorganic hybrid materials for photonics, vol.3469, pp.58-65, 1998.
DOI : 10.1117/12.312920

P. Coudray, J. Chisham, M. Andrews, and S. , UV-light imprinted sol-gel silica glass low-loss waveguides for use at 1.55µm, Opt. Eng, vol.36, issue.4, pp.1234-1240, 1997.
DOI : 10.1117/1.601243

Y. Moreau, P. Arguel, P. Coudray, P. Etienne, J. Porque et al., Direct printing of gratings on sol-gel layers, Opt. Eng, vol.37, issue.4, pp.1130-1135, 1998.

J. Porque, P. Coudray, Y. Moreau, and P. Etienne, Propagation in sol-gel channel waveguides: numerical and experimental approaches, Opt. Eng, vol.37, issue.4, pp.1105-1110, 1998.

P. Etienne, P. Coudray, Y. Moreau, and J. Porque, Photocurable sol-gel coatings: channel waveguides for use at 1.55 µm, J. of sol-gel science & technology, vol.13, pp.523-527, 1998.

R. B. Charters and B. Luther-davies, Laser written mode evolution couplers, SPIE'S 44th Annual Meeting, 1999.
DOI : 10.1117/12.363905

P. A. Besse, M. Bachmann, H. Melchior, L. B. Soldano, and M. K. Smith, Optical bandwidth and fabrication tolerances of MMI couplers, J Ligthwave Technol, vol.12, pp.1004-1009, 1994.
DOI : 10.1109/50.296191

URL : https://pure.tue.nl/ws/files/4320286/590248.pdf

R. M. Jenkins, J. M. Heaton, D. R. Wight, J. T. Parker, J. C. Birbeck et al., Novel lxN and NxN integrated optical switches using self-imaging multimode GaAs/AlGaAs waveguides, Appl. Phys. Lett, vol.64, issue.6, 1994.
DOI : 10.1063/1.111033

J. Porque, P. Coudray, R. Charters, K. Kribich, P. Etienne et al., WDM based on multimode interferencecoupler built in an organic-inorganic material, Optics Comm, vol.183, pp.45-49, 2000.
DOI : 10.1016/s0030-4018(00)00816-6

M. Bachmann, P. A. Besse, and H. Melchior, General self-imaging properties in NxN multimode interference couplers including phase relations, Appl. Opt, vol.33, pp.3905-3911, 1994.
DOI : 10.1364/ao.33.003905

Y. Moreau, , 1999.

M. Kavehrad and D. Zaccarin, Optical Coding for photonic Code Division Multiple access Communication systems, J. Lightwave Tech, vol.8, pp.478-491, 1990.

C. Lam, R. Vrijien, M. Wu, and E. Yablonovitch, Multi wavelength optical code division multiplexing, Wavelength Division multiplexing, 1999.