Q. Lai et al., ARBITRARY RATIO POWER SPLITTERS USING ANGLED SILICA ON SILICON MULTIMODE INTERFERENCE COUPLERS, Electronics Letters, 32(17), 1996, pp. 1576-1577
The authors report novel power splitters using angled multimode interf
erence couplers, that allow free selection of the power splitting rati
os. Realised in silica on silicon throughout the 1.55 mu m wavelength
range, the splitters permit polarisation independent control of the po
wer splitting ratios to within +/-2%.