Chinese Optics Letters, 2017, 15 (5): 051402, Published Online: Jul. 23, 2018 Copy Citation Text  Follow This Article

Figures & Tables

Fig. 1. Experimental setup of the proposed system.

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Fig. 2. Ellipticity, e1, e2, and e3 at a pump power between 70–110 mW.

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Fig. 3. Example of a mode-locked pulse from an OSC at 90 mW. The pulse train is given in the inset.

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Fig. 4. Pulsewidths at 90 mW pump power at different ellipticity values (a) e1, (b) e2, and (c) e3.

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Fig. 5. SNR at 90 mW. Frequency harmonics until 1 GHz (inset).

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Fig. 6. Optical spectrum at 90 mW for a different ellipticity.

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Table1. Ellipticity, DOP, and Azimuth as a Function of Pump Power

Pump Power (mW) Ellipticity, e(deg.) DOP (%) Azimuth (deg.) 70 e1, −34.052 101.182 88.641 e2, −30.884 101.515 −76.789 e3, −28.298 101.795 −69.435 80 e1, −30.624 101.152 −54.777 e2, −34.14 100.708 −59.948 e3, −17.089 100.916 −41.235 90 e1, −34.702 100.361 −59.543 e2, −37.979 100.272 −72.697 e3, −20.214 100.82 −42.592 100 e1, −36.193 100.396 −57.384 e2, −38.9 100.316 −72.155 e3, −19.622 100.64. −40.7 110 e1, −38.927 100.251 −60.201 e2, −41.798 100.446 −89.813 e3, −19.462 100.571 −37.401

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Table2. Mode-locked Pulse Characteristics at 90  mW at a Different Ellipticity

Ellipticity e (deg.) Pulsewidth (ps) FWHM (THz) TBP Average Output Power (mW) Pulse Energy (nJ) Peak Power (W) −34.702 0.35 0.944 0.3304 0.6194 0.0248 70.79 −37.979 0.34 1.0192 0.3465 0.6281 0.0251 73.89 −20.214 0.71 0.0325 0.0231 0.7925 0.0317 44.65

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H. Ahmad, S. I. Ooi, M. Z. A. Razak, S. R. Azzuhri, A. A. Jasim, K. Thambiratnam, M. F. Ismail, M. A. Ismail. Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique[J]. Chinese Optics Letters, 2017, 15(5): 051402.