TY - JOUR JF - opsi JO - ICOP & ICPET _ INPC _ ICOFS VL - 24 IS - 0 PY - 2018 Y1 - 2018/3/01 TI - Mode evolution in a tapered optical fiber via short time Fourier transform TT - بررسی تحول مدی در تار نوری نازک شده با استفاده از تبدیل فوریه زمان کوتاه N2 - we demonstrated the mode evolution during the tapering process of single mode optical fiber through the short time Fourier transform analysis. We propose this method for characterization of tapered fiber. This results allow us to be able to optimize the tapering process to control the radius of tapered fibers, the number of modes and their propagation constants. SP - 693 EP - 696 AU - Jafari, Forugh AU - Ranjbar Naeini, Omidreza AU - Chenari, Zeynab AU - Zarafshani, Pegah AU - Latifi, Hamid AD - Laser & Plasma Research Institute, Shahid Beheshti University, Tehran, Iran KW - Tapered fiber KW - short time Fourier transform KW - mode coupling KW - mode evolution KW - microfiber/nanofiber UR - http://opsi.ir/article-1-1541-en.html ER -