Title :
A novel couple-type power divider with large-angle low-loss characteristics
Author :
Lin, Han-Bin ; Chen, Wei-Lin ; Wei, Pei-Kuen ; Wang, Way-Seen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
4/1/1995 12:00:00 AM
Abstract :
A novel large-angle low-loss direction-coupler type power divider with designed ratio between output waveguides is proposed. The radiation loss is greatly reduced by using a micro-prism at the bend corner to compensate the phase mismatch due to bending. A normalized transmitted power of the power divider with a bend angle of 10° simulated by the semivectorial beam propagation method is about 93%, which is much larger than those were reported for single-mode waveguides. Application of more micro-prisms is also shown. The calculated loss of a symmetric large-angle 3-dB directional coupler with eight micro-prisms is less than 0.953 dB
Keywords :
bending; optical communication equipment; optical couplers; optical directional couplers; optical fibre communication; optical losses; optical prisms; optical waveguide components; 3 dB; bend angle; bend corner; bending; calculated loss; compensate; couple-type power divider; large-angle low-loss characteristics; micro-prism; micro-prisms; normalized transmitted power; output waveguides; phase mismatch; power divider; radiation loss; semivectorial beam propagation method; single-mode waveguides; symmetric large-angle 3-dB directional coupler; Couplings; Directional couplers; Optical design; Optical fiber communication; Optical losses; Optical refraction; Optical variables control; Optical waveguides; Power dividers; Refractive index;
Journal_Title :
Quantum Electronics, IEEE Journal of
