Path-folded infrared spectrometer consisting of 10 sub-gratings and a two-dimensional InGaAs detector.
A new compact infrared spectrometer without any mechanical moving elements has been designed and constructed using a two-dimensional InGaAs array detector and 10 sub-gratings. The instrument is compact, with a double-folded optical path configuration. The spectra are densely 10-folded to achieve 0.07-nm spectral resolution and a 2-ms data acquisition time in the 1450- to 1650-nm wavelength region, making the instrument useful for real-time spectroscopic data analyses in optical communication and many other fields.
Liu
Ming-Hui
MH
State Key Laboratory of Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.
Pan
Su-Xing
SX
Chen
Yu-Rui
YR
Wu
Yun-Fei
YF
Cai
Qing-Yuan
QY
Mao
Peng-Hui
PH
Zheng
Yu-Xiang
YX
Chen
Liang-Yao
LY