Stable dual-wavelength erbium-doped fiber laser using novel fabricated side-polished arc-shaped fiber with deposited ZnO nanoparticles

Abstract

A dual-wavelength fiber laser operating at the 1550 nm region using a side-polished arc-shaped fiber with deposited ZnO nanoparticles is proposed and demonstrated. The arc-polished fiber is fabricated by using a simple but novel approach in which a silicon carbide paper polishes one side of a conventional single-mode fiber. An arc-polished fiber with a length of 2.25 mm and an insertion loss of 0.95 dB is obtained and deposited with ZnO nanoparticles by the drop-cast method. A stable dual-wavelength output is obtained at 1562.5 and 1563.4 nm at peak powers of −9.3 and −10.1 dBm, respectively, as well as a signal-to-noise ratio of 28.4 dB and a channel spacing of 0.9 nm. Both lasing wavelengths also have narrow linewidths of between 0.045 and 0.049 nm and show little to no wavelength or power fluctuations over continued testing.

Long-Period Fiber Grating Based on Side-Polished Optical Fiber and Its Sensing Application

“…The maximum speed of the motor is 12,000 revolutions per minute (RPM), and to ensure the mechanical stability of the fiber during side throwing, the rotational speed is limited to no more than 5000 RPM/min. A piece of sandpaper is firmly wound around the exposed shaft of the DC motor, about 3 cm in diameter, and used as a polished machine [25]. During polished, use 400, 600, and 800 grit sandpaper once each, and finish with 800 grit paper (minimize topographic effects by fine polished the surface of the sample).…”

Passively Q-switched erbium-doped fiber laser using coated reduced graphene oxide on arc-shaped single mode optical fiber as a saturable absorber

“…Typically, the evanescent field is contained by the thick cladding region of the fiber, preventing it from interacting with its environment. However, the thickness of the cladding region can be reduced either through tapering [14] or by grinding away a section of the cladding region, thus exposing the core [15][16][17][18][19][20]. These fibers, known as arc-shaped fibers, allow for significant interaction between the evanescent field of the propagating signal and the SA material, enabling Q-switching and even mode-locking to be realized at higher operational powers and lower Q-switching thresholds [21][22][23][24].…”

D-shaped Photonic Crystal Fiber Based on Surface Plasmon Resonance Sensor with Metal Nanodimers Array

“…The refractive index (RI) detection and field intensity can be promoted by adjusting the metal nanodimers array [14,15]. Photonic crystal fiber (PCF) is thought to be a promising candidate for SPR sensor due to its flexible structure, excellent transmission characteristics, integration and miniaturization [16][17][18]. Meanwhile, the PCF-SPR sensors not only overcome the problems of immense volume and The designed PCF sensor is made up of pure silica by ultrasonic punching, the D-shaped flat surface can be fabricated by side polishing technology or controlled etching process [34,35].…”