How Optical Fibers Work
Manmade artificial lighting solutions or even natural light emits a range of extended wavelengths that add quality to way we perceive light and everything under it. The quality and wavelengths of lights are also applicable in a range of instruments and devices like cameras and scientific tools where the matter of precision comes in to play. In case of the latter, it is imperative that only a certain wavelengths of lights are allowed to pass while the rest if blocked. Optical filters are the mini solutions that help make this otherwise impossible task easily achievable.
In simple words, these are tools that designed specifically to allow certain wavelengths of lights to pass through them while blocking or reflecting the others. At present, there are number of available options in the market that are mass manufactured by top companies involved in this field of expertise for decades together. Absorptive, monochromatic, neutral density, metal mesh filters polarizer, arc welding etc are a few to mention.
However, introduction of Dichroic filters better known as thin film optical filters have made a revolutionary difference in taking the process of wavelength filtering to the next level. At present, these filters are used very commonly in quantitative fluorescence microscopy while enhancing performance of instruments like Raman spectrometers, flow cytometers, DNA sequencers and more.
Users of Dichroic optical filters have also expressed that they are more strudy in their make and therefore last longer than other filter options. This in turn enhances the lifespan of otherwise expensive and sensitive devices based on these filters.
Lee Wood is an experienced optical filter and optical coating specialist. You can find his thoughts at optical coatings blog.