Title :
Optical spectrum analyzer using cascaded AWGs with different channel spacings
Author :
Takada, K. ; Yamada, H. ; Okamoto, K.
Author_Institution :
NTT Photonics Labs., NTT Corp., Ibaraki, Japan
fDate :
7/1/1999 12:00:00 AM
Abstract :
A new type of optical spectrum analyzer is proposed that features the cascade connection of different arrayed-waveguide gratings (AWGs) with different channel spacings through optical switches. The spectral resolution of our system is determined by the narrowest channel spacing and its available channels are ten times the original channels of the AWG with the spacing. We demonstrate the analyzer using 100- and 10-GHz spaced AWGs.
Keywords :
demultiplexing; diffraction gratings; optical arrays; optical information processing; optical waveguides; spectral analysis; arrayed-waveguide gratings; cascade connection; cascaded AWGs; channel spacings; narrowest channel spacing; optical spectrum analyzer; optical switches; original channels; spectral resolution; Arrayed waveguide gratings; Bandwidth; Channel spacing; Frequency; Optical arrays; Optical switches; Passband; Phased arrays; Spectral analysis; Testing;
Journal_Title :
Photonics Technology Letters, IEEE
