Research On Optical-Controllable Property Of Side Polished Fiber And Micro Nano Fiber Based On Graphene

Optical fiber sensing is an important field of optical fiber technology. The development of optical fiber sensing began in 1970 s, and has been paid great attention. Side polished fiber and micro nano fiber which are used as bases of optical fiber sensor have been widely used and play an important role in photoelectric sensor detection.Graphene is a two-dimensional honeycomb crystal which composed of a single layer carbon atoms. The discovery of graphene has drawn great attention of scientists. Due to graphene’s unique properties, it has been forecasted to cause a revolutionary change in many fields. However, the applications of graphene have been hindered by its poor solubility and low yield, which are mainly caused by its high inter-layer attraction energies. Therefore, we make the methyl blue-functionalized reduced graphene oxide.The side polished fiber generally refers to the special optical fiber that is formed by the standard single-mode optical fiber removed the part cladding by the side polishing technology or chemical corrosion method.Micro nano fiber is the special optical fiber with a diameter of several hundred nanometers to several micrometers. They can be fabricated by flame-heating and taper-drawing techniques.The main content of this paper is exploring the light-dependent control property of side polished optical fiber which overloaded graphene and micro nano fiber which overloaded methyl blue-functionalized reduced graphene oxide.Graphene is deposited onto the side polished area of the side polished fiber by using natural evaporation deposition. We measure the optical transmitted power in side polished fiber while using the pumping light of 405 nm illuminated onto the area deposited by graphene. The results show side polished fiber overloaded graphene has a high sensitivity of light-dependent with pumping light of 405 nm. When the pumping light power change from 0mw to 11 mw, the change of light power is 3.4 d B through the fiber sensor, linear correlation between relative power with the pumping light power increase as high as 97.1% with the sensitivity is 0.29 d B/mw. And the change of light power is 2.9 d B through the fiber sensor, linear correlation between relative power with the pumping light power decrease as high as 96.5% with the sensitivity is 0.25 d B/mw.Methyl blue-functionalized reduced graphene oxide is deposited onto the micro nano fiber by using natural evaporation deposition. We measure spectrum in micro nano fiber while using the pumping light of 405 nm shining on the area deposited by methyl blue-functionalized reduced graphene oxide. The experiments show that when the pumping light of 405 nm is illuminated onto the methyl blue-functionalized reduced graphene oxide film with power ranging from 0.03 mw to 12.77 mw, the transmitted optical power of the MF changes with a relative variation of 2.5~3d B in broadband(1520-1620nm) operation. The device has a sensitivity of ~0.22 d B/mw(1520nm) and illustrates that the methyl blue-functionalized reduced graphene oxide possesses high potentiality in photonic application such as fiber-optic sensor and other photonic devices.The innovations of this research are as follows: 1. We studies the optical-controllable property of side polished fiber based on graphene bypumping external irradiation. And we won good quadratic curve relationship betweenpumping light of 405 nm and the output power of the graphene side polished fiber. Thus, thedevice could probe pumping light of 405 nm in the magnitude of mw 2. We obtain novel methyl blue-functionalized reduced graphene oxide by the improvedmethod. And we studies the optical-controllable property of micro nano fiber based onmethyl blue-functionalized reduced graphene oxide. We won good quadratic curverelationship between pumping light of 405 nm and the output power of micro nano fiber. Andthe device is broadband(100nm).