1.
Opt Lett
; 36(7): 1044-6, 2011 Apr 01.
Article
in English
| MEDLINE
| ID: mdl-21478977
ABSTRACT
We report that a spectrum can be retrieved with a planar waveguide spatial heterodyne spectrometer (SHS) incorporating an active phase-shift scheme, where the phase shifts are distributed around π/2. This was confirmed experimentally with an SHS that had 32 interleaved Mach-Zehnder interferometers and whose free spectral range was 625 GHz. The phase shifts ranged from 0.71 to 2.2 rad against the target of π/2 rad.
Subject(s)
Fourier Analysis , Optical Phenomena , Spectrum Analysis/methods , Calibration , Signal Processing, Computer-Assisted , Systems Integration
2.
Opt Lett
; 35(12): 2103-5, 2010 Jun 15.
Article
in English
| MEDLINE
| ID: mdl-20548400
ABSTRACT
We describe a configuration of the integrated-optic spectrometer based on Fourier-transform spectroscopy. The original source spectrum has been successfully retrieved with 20 GHz resolution by the spectrometer implemented in a silica-based planar waveguide.