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Fiber optics for spectroscopic illumination.

F Robben, R Fraser

|January 23, 2010

Summary

This study measured light transmission through a sheathed optical fiber. Results informed the selection of an optimal optical system for spectrometer illumination.

Area of Science:

Optics and Photonics
Spectroscopy Instrumentation

Background:

Efficient illumination is critical for spectrometer performance.
Optical fibers are used for light delivery in various scientific instruments.

Purpose of the Study:

To characterize the transmission properties of a sheathed optical fiber.
To determine the optimal optical system for spectrometer illumination using fiber transmission data.

Main Methods:

Conducted absolute and angular transmission measurements on a 0.15 mm diameter, 2.1 m long sheathed fiber.
Defined and calculated the optical angular transfer function.
Computed effective transmission as a function of entrance and output f-numbers.

Main Results:

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Quantified the light transmission characteristics of the sheathed fiber.

Established the relationship between fiber transmission and optical system f-numbers.

Identified suitable optical configurations for spectrometer illumination.

Conclusions:

The study provides essential data for selecting appropriate optical systems for fiber-coupled spectrometers.
Understanding fiber transmission properties optimizes light delivery and enhances spectroscopic measurements.