Title :
Wavelength- and polarization-independent large angle InP/lnGaAsP digital optical switches with extinction ratios exceeding 20 dB
Author :
Nelson, W.H. ; Masum Choudhury, A.N.M. ; Abdalla, M. ; Meland, E. ; Niland, W.
Author_Institution :
GTE Labs. Inc., Waltham, MA, USA
Abstract :
Record polarization-independent extinction ratios are reported for ridge waveguide digital optical switches in InP/InGaAsP. Wavelength insensitivity is demonstrated for the first time, with extinction ratios that exceed 20 dB at both 1.3 and 1.5 μm for the same switch. The switch´s total opening angle of 0.5/spl deg/ is more than a factor of two larger than other digital optical switches demonstrated at any wavelength.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; integrated optics; light polarisation; optical fibre communication; optical switches; optical waveguides; ridge waveguides; semiconductor switches; 1.3 mum; 1.5 mum; InP-InGaAsP; InP/lnGaAsP digital optical switches; extinction ratios; large angle; polarization-independent; ridge waveguide digital optical switches; total opening angle; wavelength independent; Extinction ratio; High speed optical techniques; Indium gallium arsenide; Indium phosphide; Optical crosstalk; Optical device fabrication; Optical fiber networks; Optical polarization; Optical switches; Optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
