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Chin. Phys. B, 2018, Vol. 27(9): 094210    DOI: 10.1088/1674-1056/27/9/094210
Special Issue: SPECIAL TOPIC — Nanophotonics
SPECIAL TOPIC—Nanophotonics Prev   Next  

Observation of 550 MHz passively harmonic mode-locked pulses at L-band in an Er-doped fiber laser using carbon nanotubes film

Qianqian Huang(黄千千)1, Chuanhang Zou(邹传杭)1, Tianxing Wang(王天行)1,5, Mohammed Al Araimi2,3,4, Aleksey Rozhin2,3, Chengbo Mou(牟成博)1
1 Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai Institute for Advanced Communication and Data Science, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China;
2 Aston Institute of Photonic Technologies(AIPT), Aston University, Birmingham, B4 7ET, United Kingdom;
3 Nanoscience Research Group, Aston University, Birmingham, B4 7ET, United Kingdom;
4 Al Musanna College of Technology, Muladdah, Al Musanna, P. O. Box 191, P. C. 314, Sultanate of Oman;
5 Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract  

We demonstrate a passively harmonic mode-locked (PHML) fiber laser operating at the L-band using carbon nanotubes polyvinyl alcohol (CNTs-PVA) film. Under suitable pump power and an appropriate setting of the polarization controller (PC), the 54th harmonic pulses at the L-band are generated with the side mode suppression ratio (SMSR) better than 44 dB and a repetition frequency of 503.37 MHz. Further increasing the pump power leads to a higher frequency of 550 MHz with compromised stability of 38.5 dB SMSR. To the best of our knowledge, this is the first demonstration on the generation of L-band PHML pulses from an Er-doped fiber laser based on CNTs.

Keywords:  passively harmonic mode locking      L-band      Er-doped fiber laser      carbon nanotubes film  
Received:  16 April 2018      Revised:  23 May 2018      Published:  05 September 2018
PACS:  42.60.Fc (Modulation, tuning, and mode locking)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  42.70.-a (Optical materials)  
Corresponding Authors:  Chengbo Mou     E-mail:  mouc1@shu.edu.cn

Cite this article: 

Qianqian Huang(黄千千), Chuanhang Zou(邹传杭), Tianxing Wang(王天行), Mohammed Al Araimi, Aleksey Rozhin, Chengbo Mou(牟成博) Observation of 550 MHz passively harmonic mode-locked pulses at L-band in an Er-doped fiber laser using carbon nanotubes film 2018 Chin. Phys. B 27 094210

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