Tunable multiwavelength erbium-doped fiber laser incorporating single-core comb filter at room temperature

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• 作者：M.S. Islam^a ; ^b ; ^{msislamd@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; A.B. Mohammad^a ; J.N. Sikta^b ; N.N. Ripa^b
• 关键词：Fiber laser ; EDF ; Multiwavelength ; NPR ; Combfilter
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：126
• 期：23
• 页码：4268-4271
• 全文大小：1490 K

文摘

The generation of tunable multiwavelength erbium-doped fiber laser based on an integrated structure of a single-core comb filter and nonlinear polarization rotation (NPR) is proposed and successfully demonstrated at room temperature. The NPR effect effectively induced intensity and wavelength-dependent loss to alleviate mode competition caused by homogeneous gain broadening in erbium-doped fibers. Thirty-two lasing wavelengths in a 3 dB flattened spectrum with a tunable wavelength spacing of 0.9 nm–1.8 nm have been achieved. Good stability of the laser operating at room temperature has been verified by using an optical spectrum analyzer to measure every 10 min for an hour.