Optofluidic tunable mode-locked fiber laser using a long-period grating integrated microfluidic chip

Jie Wang, Mian Yao, Chengzhi Hu, Aping Zhang, Yonghang Shen, Hwa Yaw Tam, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


An optofluidic tunable mode-locked fiber laser using a microfluidic chip integrated with long-period grating (LPG) is presented. The microfluidic chip enables ultrafine adjustment of the liquid's refractive index and, thus, LPG's spectrum via tuning the mixing ratio of the microfluidic flows. With such an optofluidic spectrum-tunable filter, the central wavelength of the mode-locked laser can be tuned continuously, while the mode-locking state is steadily maintained. The mode-locked pulses are measured with a pulse duration of 0.9 ps and repetition rate of 12.14 MHz, respectively. Moreover, bound solitons with variable soliton separations are experimentally demonstrated.
Original languageEnglish
Pages (from-to)1117-1120
Number of pages4
JournalOptics Letters
Issue number6
Publication statusPublished - 15 Mar 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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