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A Multimodal Wide-Field Fourier-Transform Raman Microscope
Published on: December 30, 2025
Performance analyses of an infrared single-mode all-fiber-optic Fourier-transform spectrometer
Applied Optics
|November 6, 2010
Summary
Stretching fiber arms in Fourier-transform spectrometers (FTS) causes spectral shifts and resolution changes. Theoretical and experimental analysis reveals methods to mitigate these performance limitations for improved spectral accuracy.
Area of Science:
- Optics
- Spectroscopy
- Fiber Optics
Background:
- Fourier-transform spectrometers (FTS) commonly use fiber optics for infrared (IR) applications.
- Stretching fiber arms is a method for optical phase modulation in all-fiber-optic FTS.
- This stretching operation can introduce physical performance limitations.
Purpose of the Study:
- To theoretically and experimentally investigate the performance limits of all-fiber-optic FTS due to fiber arm stretching.
- To analyze the impact of optical path difference dispersion and linear birefringence on spectral data.
- To identify and address unique errors in the optical phase domain for improved calibration.
Main Methods:
- Theoretical analysis of optical path difference (OPD) dispersion and its spectral shift.
- Experimental investigation of spectral resolution and sampling distance dispersion.
- Analysis of linear birefringence effects and methods for compensation.
- Examination of fiber-parameter errors and piezoelectric nonlinearity in optical phase modulation.
Main Results:
- OPD dispersion causes spectral shifts in recovered spectra.
- Spectral resolution and sampling distance become dispersive.
- Linear birefringence affects final spectra but can be compensated.
- Fiber-parameter errors and nonlinearity introduce unique challenges for calibration.
Conclusions:
- Stretching fiber arms in IR all-fiber-optic FTS introduces performance limitations.
- Understanding and compensating for OPD dispersion and birefringence is crucial.
- Calibration methods are essential to address unique errors in optical phase modulation for accurate spectral recovery.
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