BEND LOSS - RAMIFICATION OWING TO CUT OFF WAVELENGTH AND CURVATURE RADIUS

Optical fiber communication is most growing and expanding technique now a days. In the evolutional study of data transmission lines (field) the OFC communication has reached to large size of extents' and playing valuable rolls in our day to day cycles. Which keeps its own technological importance in the field of data communication. There were certain losses in the photonic communication but surely less than ordinary wired communication. As compare to conventional TL used in data communication, the number of losses taking place are more but the amount of loss is very less in photo communication. Either the losses are at lower side but still engineer or the person working with same should be careful regarding that loss, so that one can analyse and can try to avoid or trench it. Enrichment in performance of communication based on optics can be expertise or concluded by precision loss measurement. Simultaneously with proper actions of lessening them by changing different related parameters. The paper explains that either of few parameters like cut off wavelength, radius of bending, viewing angle, chromatic dispersion, wavelength and refractive index of clad & core can be varied so that losses can be fallen down and efficiency and performance can be boosted. Here we have tried to investigate the relationship between i) bend loss and curvature, ii) bend loss and source wavelength. Secondly, we have proved that cut off radius of fiber bend also depends on source wavelength but in inverse proportion. The investigation is done by performing experiments by availing different wavelength sources with variations in fiber cut off wavelengths.