Title :
Design and fabrication of wide-angle abrupt bends on lithium niobate
Author :
Lu, Ruei-Chang ; Liao, Yu-Pin ; Lin, Han-Bin ; Wang, Way-Seen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
6/1/1996 12:00:00 AM
Abstract :
A new wide-angle low-loss abrupt bend is presented. A prism-like region of index equal to that of the substrate is placed at the bend corner to compensate the phase mismatch caused by the bend. The novel abrupt bend has been fabricated on a LiNbO3 substrate by proton exchange. The experimental result shows that the normalized transmitted power is 63% with a bend angle of 10°, which is quite close to the simulated result
Keywords :
finite difference methods; integrated optics; ion exchange; lithium compounds; optical design techniques; optical fabrication; optical waveguide components; waveguide discontinuities; LiNbO3; LiNbO3 substrate; abrupt bend design; abrupt bend fabrication; bend angle; normalized transmitted power; phase mismatch compensation; prism-like region; proton exchange; semivectorial finite difference beam propagation method; wide-angle low-loss abrupt bend; Dielectric substrates; Fabrication; Finite difference methods; Lithium niobate; Optical losses; Optical materials; Optical refraction; Optical variables control; Optical waveguides; Protons;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.577364
