Subpicometric Optical Spectrum Analyzer (BOSA): BOSA's has unique combination of high-resolution and high dynamic-range brings a new range of measurement possibilities. The principle behind BOSA performance is stimulated Brillouin scattering (SBS), a non-linear optical effect produced by narrow-linewidth high-power light propagating through an optical medium that causes a very narrow filtering effect. BOSA technology is available in different models to fit all requirements and budgets