Title :
Experimental confirmation of phase relationships of multimode interference splitters using a shearing-type near-field Sagnac interferometer
Author :
Kareenahalli, S. ; Dagenais, M. ; Stone, Dennis ; Tayag, Tristan J.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
fDate :
7/1/1997 12:00:00 AM
Abstract :
We report, for the first time, the experimental confirmation of the phase relationships between the output images of 1/spl times/4 and 1/spl times/8 multimode interference (MMI) splitters. Interference data is obtained using a shearing type near-field Sagnac interferometer. A Fourier transform technique is used to extract the phase information of the splitter output images. Excellent agreement between the experimental results and the theoretical predictions is obtained, which indicates good phase performance of the device.
Keywords :
Fourier transform optics; light interference; light interferometers; optical communication equipment; optical fabrication; optical testing; phase measurement; wavelength division multiplexing; Fourier transform technique; experimental confirmation; multimode interference splitters; output images; phase information extraction; phase relationships; shearing type near-field Sagnac interferometer; shearing-type near-field Sagnac interferometer; splitter output images; Couplers; Data mining; Fourier transforms; Interference; Laboratories; Optical device fabrication; Optical waveguides; Phase measurement; Sagnac interferometers; Shearing;
Journal_Title :
Photonics Technology Letters, IEEE
