Spectroscopy Study of Single-Wall Carbon Nano-Tubes

The spectroscopy of several kinds of single-wall carbon nanotubes containing pure, functionalized with OH, COOH, and NH2 thin films were studied. The effect of electric filed on the spectroscopy using transparent and conductive Indium Tin Oxide (ITO) thin film was also investigated. We have found that the spectroscopy analysis obtained in this study can be used in fiber optic applications. The attenuation measurements have been done in the wavelength range of 1260-1640 nm for non- amplification, and 1520–1580 nm for optical amplification. The results of a configuration without optical amplification with +10 dBm power of broadband source showed that pure SWNT had 10 dB attenuation and the graph is flat in full band. The electrical filed applied to the SWNT did not have any effect on the spectroscopy. Other types of functionalized SWNT have tilt in attenuation behavior over a wavelength range. When the effect of optical amplification such as Erbium-Doped Fiber Amplifier (EDFA) with applied a power of +23 dBm was used, an attenuation with linear in amplification band and nonlinear behavior in boundaries of amplification band was observed.