Author :
Toyoda, S. ; Fujiura, K. ; Sasaura, M. ; Enbutsu, K. ; Tate, A. ; Shimokozono, M. ; Fushimi, H. ; Imai, T. ; Manabe, K. ; Matsuura, T. ; Kurihara, T. ; Lee, S.C.J. ; de Waardt, H.
Author_Institution :
NTT Photonics Labs., NTT Corp., Kanagawa, Japan
Abstract :
An electro-optic (EO) phase modulator with a low driving voltage that uses newly developed KTa1-xNbxO3 buried waveguides is described. The waveguide layers for the core and cladding were formed using liquid phase epitaxy techniques. The propagation loss was less than 0.5 dB/cm and the polarisation-dependent loss was less than 0.1 dB/cm. The EO phase modulator had a low Vπ×L value of <1.5 cm V (4.0 V biased potential) and a fast response of 3 GHz.
Keywords :
electro-optical modulation; liquid phase deposited coatings; optical communication equipment; optical losses; optical waveguides; phase modulation; potassium compounds; tantalum compounds; 3 GHz; KTaO3NbO3; cladding; core; crystal waveguide based electrooptic phase modulator; driving voltage; liquid phase epitaxy; optical propagation loss; polarisation; waveguide layer;
