Title :
Arbitrary ratio power splitters using angled silica on silicon multi-mode interference couplers
Author :
Lai, Q. ; Bachmann, M. ; Hunziker, W. ; Besse, P.A. ; Melchior, H.
Author_Institution :
Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
Planar power splitters with free selection of power splitting ratios have been realized in the form of angled multi-mode interference (MMI) couplers in silica on silicon. Through proper choice of the intersection angle between two MMI couplers, any splitting ratio between 0 and 100% can be selected. The splitting ratios are within /spl plusmn/2 percent of the theoretically calculated values. Fiber-to-fiber losses are 1.1 dB and 18.7 dB for the 100% and 0% outputs, respectively. Excess losses are below 0.5 dB and the polarization dependence is less than 0.1 dB. These planar silica on silicon power splitters are suitable devices both for stand alone with fiber pigtails as well as for integration with other active and passive waveguide components.
Keywords :
Mach-Zehnder interferometers; light interference; optical couplers; optical fabrication; optical losses; optical planar waveguides; silicon; silicon compounds; 0.5 dB; 1.1 dB; 18.7 dB; SiO/sub 2/-Si; active waveguide components; angled silica; arbitrary ratio power splitters; excess losses; fiber pigtails; fiber-to-fiber losses; free selection; intersection angle; passive waveguide components; planar power splitters; polarization dependence; polarization independent power splitting ratios; power splitting ratios; silicon multi-mode interference couplers; splitting ratio;
Conference_Titel :
Optical Communication, 1996. ECOC '96. 22nd European Conference on
Conference_Location :
Oslo, Norway
Print_ISBN :
82-423-0418-1
