A tunable Y-branch Ni:LiNbO/sub 3/ polarization (mode) splitter with a ridged input arm is presented. The ridge is used to lower the tuning voltage and thus enhance the tuning flexibility of the polarized fields. To improve the confinement of Ni-indiffused waveguide, Zn and Ni are both diffused at the same time. To use the electro-optic modulation, the polarization splitter is implemented in a Z-cut Y-propagating LiNbO/sub 3/. Experimental results show that the tuning voltage can be reduced by a factor of about 1/3 with a ridge of height 2 /spl mu/m. The measured extinction ratio is 21 dB for the transverse electric (TE) mode and 18 dB for the transverse magnetic (TM) mode.
Novel optical polarization splitter in lithium niobate
01.01.2003
327807 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Novel Optical Polarization Splitter in Lithium Niobate
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