Abstract
A wavelength-tuning passively mode-locked all-fiber laser based on cascaded dual single mode fiber-graded index multimode fiber-single mode fiber (CD-SMS) structure is proposed in this paper. The CD-SMS structure geometry, where two SMSs were fused together, and each of SMS was coined into the paddles of polarization controller (PC). By adjusting the orientation angle of the paddles, magnitude of the nonlinear phase shifts of the light can be controlled to realize mode-locking and filtering. Experimentally, mode locking was obtained based on the SMS structure with pulse duration of 930fs at the central wavelength 1568nm and FWHM bandwidth of 2.9nm. The fundamental repetition rate obtained was 18.22MHz. By inserting another SMS into the ring cavity, and make-up CD-SMS, the five main peaks of mode-locked pulses were tuned in the range of 1533-1573nm was achieved by mechanically tuning the orientation angles of paddles of two PCs, the wavelength tuning range covers the whole C-band, reaching 40nm. However, the tunable range is limited by gain bandwidth of erbium ion. The wavelength-tuning mode locked fiber laser based on CD-SMS provides a way to a wide range of tunable ultrafast lasers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
