These transmission characteristics are of utmost importance when the suitability of optical fibers for communication purposes is investigated. Home FibreOptic What are the characteristic parameters of optical fibers? What are the characteristic parameters of optical fibers? Optical fiber parameters can be categorized into three main types: geometric, optical, and transmission characteristics, including: Attenuation (Loss. The basic transmission mechanisms of the various types of optical fiber waveguide have been discussed in Chapter 2. Power meters typically consist of a solid state detector (silicon for short wavelength systems, germanium or InGaAs for long wavelength systems), signal conditioning circuitry and a digital display of power. To. Such a fiber consists of a core (refractive index n 1) and a cladding (refractive index n 2, n 2 <n 1) as shown in Fig. Balance of optical power in optical system 4. Brillouin. Compared with radiowave and microwave communications, lightwave transmission has some distinguishing features: Short wavelengths (A '" 0. 7 /lm), so that source, fiber, detector, and in terconnection dimensions are small ( '" 1 mm to 1 cm) High frequencies (v'" 175-375 THz), so that enormous.