1550 nm 1 Atmospheric attenuation 1 Brillouin scattering 1 FSO: free space optical 1 Free space optical communications Low visibilities 1 Malaysia 1 Mie scattering 1 Optical communication 1 Optical wireless 1 Performance based 1 Performance of systems 1 Photonics 1 Scattering 1 Scattering coefficient 1 Site selection 1 Wavelength selections 1 Weather conditions 1 Weather datum 1