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year 28, Issue 1 (1st Iranian Conference on optical fiber sensors (ICOFS 2021) 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 28(1): 19-21 |
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Khosrojerdi H, Latifi H, Ranjbar O, Zibaee M E. Design and fabrication of tunable fiber fabry-perot filter with flat-concave cavity based on ceramic ferrule and nanostage with closeloop control mode. ICOP & ICPET _ INPC _ ICOFS 2021; 28 (1) :19-21
URL: http://opsi.ir/article-1-2497-en.html
URL: http://opsi.ir/article-1-2497-en.html
1- Dept. of Optical Fiber Sensor, Faculty of Laser and Plasma research institute, Shahid Beheshti University, Tehran, Iran.
2- Dept. of Optical Fiber Sensor, Faculty of Laser and Plasma research institute, Shahid Beheshti University, Tehran, Iran
2- Dept. of Optical Fiber Sensor, Faculty of Laser and Plasma research institute, Shahid Beheshti University, Tehran, Iran
Abstract: (1254 Views)
In this paper, The flat-concave structure is used to fabricate tunable fiber fabry-perot filter due to reducing the loss within the cavity and increasing the stability. 
etching and 
laser pulse are used for polishing to create a concave structure at the end of GRIN multimode fiber. The innovation of this paper is the construction of a stable fabry-perot filter with a high SNR and prefect alignment, using an optical fiber adapter, pigtail and bare Adapter, which performs alignment by ceramic ferrule.Gold and Aluminum coatings are used to increase the reflectivity of the filter surfaces. The fabry-perot made Filter with Finesse of 61 and FSR More Than 100 nm. The filter tunability is based on piezoelectric actuator with 5nm resolution in closed loop control mode. One of the main advantages of this structure is the capability to change the FSR conveniently, easy replacement of fiber Optic Without misalignment and high Repeatability.
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