Title :
A guided-wave Mach-Zehnder interferometer structure for wavelength multiplexing
Author :
Tervonen, Ari ; Pöyhönen, Pekka ; Honkanen, Seppo ; Tahkokorpi, Markku
Author_Institution :
Nokia Res. Center, Espoo, Finland
fDate :
6/1/1991 12:00:00 AM
Abstract :
A guided-wave Mach-Zehnder interferometer structure, based on the use of a four-port hybrid optical coupler consisting of symmetric and nonsymmetric y junctions, is proposed for wavelength-division multiplexing application. This structure provides less sensitivity to fabrication parameters and optical polarization, and can also be applied to a wide-wavelength spacing operation. Interferometers for wavelength splitting in the 1.3- and 1.55- mu m windows were designed and fabricated into a glass substrate with a dry silver ion exchange process. The measured crosstalk was -30 dB with nonpolarized light.<>
Keywords :
crosstalk; frequency division multiplexing; light interferometers; light polarisation; optical communication equipment; optical couplers; 1.3 micron; 1.55 micron; crosstalk; dry Ag ion exchange process; fabrication parameters; four-port hybrid optical coupler; glass substrate; guided-wave Mach-Zehnder interferometer structure; nonpolarized light; nonsymmetric y junctions; optical polarization; symmetric y junctions; wavelength splitting; wavelength-division multiplexing; wide-wavelength spacing operation; windows; Hybrid junctions; Interferometers; Optical coupling; Optical crosstalk; Optical device fabrication; Optical interferometry; Optical polarization; Optical sensors; Particle beam optics; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
