Title :
Adiabatic couplers: design rules and optimization
Author :
Ramadan, Tarek A. ; Scarmozzino, Robert ; Osgood, Richard M., Jr.
Author_Institution :
Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
Explicit analytic design rules are derived for both 3 dB and full adiabatic couplers. The design rules are in excellent agreement with numerical calculations using the beam propagation method (BPM). It is shown that the length scaling for 3 dB couplers compared to full couplers makes the former more difficult to design. The design for each case is optimized to obtain the upper limit of performance and a comparison is carried out between two different design geometries for both 3 dB and full adiabatic couplers
Keywords :
geometry; optical couplers; optical design techniques; optical waveguide theory; optimisation; adiabatic coupler design rules; beam propagation method; design geometries; full adiabatic couplers; length scaling; numerical calculations; optimization; Coupled mode analysis; Couplers; Design methodology; Design optimization; Differential equations; Geometrical optics; Geometry; Optical refraction; Optical variables control; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
