A liquid crystal-based Fourier optical spectrum analyzer
Abbreviated Journal Title
IEEE Photonics Technol. Lett.
dense wavelength-division multiplexing; (DWDM); dynamic gain-flattening; filter (DGFF); Fourier transform spectrometer; liquid crystal (LC); devices; optical spectrum analyzer (OSA); TECHNOLOGY; Engineering, Electrical & Electronic; Optics; Physics, Applied
We propose a liquid crystal (LC)-based cost-effective Fourier optical spectrum analyzer (FOSA) without moving parts. Unlike normal spectrometers, the LC FOSA retrieves the spectrum's Fourier coefficients instead of the direct spectrum measurement by changing different LC states in a number of stages. Besides the common applications, the LC FOSA can precisely read and recover the envelope of a dense wavelength-division-multiplexing spectrum to act as a spectral monitor and then work with a gain-flattening device to control the optical network instantly, and dynamically.
Ieee Photonics Technology Letters
"A liquid crystal-based Fourier optical spectrum analyzer" (2004). Faculty Bibliography 2000s. 4565.