Abstract

When measuring weak spectral peaks, the signal/noise ratio can be increased by using all the information in the band rather than only its peak amplitude (even if the latter is the only one to emerge from the noise). Ideally, the entire spectral region in which no other spectral feature becomes appreciable could be so used.

Noise-enhanced measurement of weak doublet spectra with a Fourier-transform spectrometer and a 1-bit analog-to-digital converter

May Lim and Caesar Saloma
Appl. Opt. 40(11) 1767-1775 (2001)

Balanced detection spectral domain optical coherence tomography with a multiline single camera for signal-to-noise ratio enhancement

Wen-Chuan Kuo, Yune-Shee Lai, Chih-Ming Lai, and Yi-Shiang Huang
Appl. Opt. 51(24) 5936-5940 (2012)

Periodic nonsinusoidal vibration: effects in matched filtering for detection of signals buried in noise of uniform spectral density

K. Singh and P. C. Gupta
Appl. Opt. 14(12) 2940-2943 (1975)

Signal-to-noise ratio enhancement in frequency-modulation spectrometers by digital signal processing

Haris Riris, Clinton B. Carlisle, Russell E. Warren, and David E. Cooper
Opt. Lett. 19(2) 144-146 (1994)

Generalized signal-to-noise ratio for spectral sensors with correlated bands

Zhipeng Wang, J. Scott Tyo, and Majeed M. Hayat
J. Opt. Soc. Am. A 25(10) 2528-2534 (2008)