In fiber lasers and amplifiers

Interferometry is widely known to be an important investigative technique based on the superimposing of two or more wavelengths of the same frequency. While one light beam interacts with the object being measured, the other does not, and their constructive interference results in a pattern or spatial shape that can then be used for extremely accurate and complex measurements.

Interferometry devices have extensive applications in all branches of science, technology and medicine. Within the field of fiber optics, interferometers are employed in the precise measurement of small displacements, refractive index changes, surface irregularities/topography, among other observational procedures. In the space industry, interferometry detects gravitational waves using the interference pattern of the laser.

MPBC’s Single Frequency Raman Fiber Amplifiers represent a paradigm shift in performance, operational simplicity, compactness, maintenance and reliability. Our VRFA systems are capable of amplifying a narrow, linearly-polarized, NIR input signal and converting it to the visible region without spectrum broadening – thus making it the ideal solution for stringent interferometric procedures and applications. Wavelength ranges are available from 900 nm to 1950 nm in the NIR and 550 nm to 765 nm in the visible spectrum, with custom wavelengths available on demand.

In telecom

Comb sources are essential test instruments in interferometry, providing a stable and coherent light source with multiple closely spaced wavelengths. This characteristic allows for high-resolution measurements and precise interference patterns, which are crucial in various interferometric applications, such as optical testing, metrology, and sensing.

In interferometry, the comb source generates a series of frequency-stable optical lines that can be directed into an interferometer. As these multiple wavelengths overlap, they create interference fringes, enabling detailed analysis of optical path differences, surface characteristics, and material properties. The ability of comb sources to deliver consistent and high-quality light across a broad spectrum enhances the accuracy and sensitivity of interferometric measurements, making them invaluable in research and industrial applications where precision is paramount.