Integrated polarization rotator made of periodic asymmetric buried Ta2O5 / silica sol-gel waveguides.
A ridge waveguide technology exhibiting high polarization dependency is developed for new efficient multi-section passive polarization rotator applications. In the presented configuration, the calculated mode coupling between the waveguide sections is very efficient and allows a polarization rotation with a high extinction ratio at lambda=1,55 mum. Experimental results show efficient polarization rotation with low cross-talk levels (-16dB) and no significant excess losses between sections. However, the overall transmission efficiency is limited by propagation losses and coupling losses to standard optical fibers.
Mangeat
T
T
Escoubas
L
L
Flory
F
F
Roussel
L
L
De Micheli
M
M
Coudray
P
P