Title :
All-Fiber-Integrated High-Power Supercontinuum Sources Based on Multi-Core Photonic Crystal Fibers
Author :
Hongwei Chen ; Huifeng Wei ; Tong Liu ; Xuanfeng Zhou ; Peiguang Yan ; Zilun Chen ; Shengping Chen ; Jinyan Li ; Jing Hou ; Qisheng Lu
Author_Institution :
Coll. of Optoelectron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
The obstacles of power scaling the supercontinuum (SC) source based on single-core photonic crystal fiber (PCF) are analyzed. The combination of high-power fiber lasers and multi-core PCFs would be a feasible method to obtain an all-fiber-integrated high-power broadband SC source (covering visible range). In this paper, we present a comprehensive study of high-power SC generation in multi-core PCFs. Comparative experiments are performed by using a high-power pulse-repetition-rate-tunable picosecond fiber laser to pump two kinds of home-made seven-core PCFs. The influences of PCF structure (fiber dispersion property) and pulse repetition rate (pulse peak power) on the SC generation in multi-core PCFs are investigated in detail. When the picosecond fiber laser at a pulse repetition rate of 1.9 GHz is adopted as the pump, 116 W SC spanning from 800 to 1700 nm is generated in 1# seven-core PCF. Also 64 W visible SC spanning at least 500-1700 nm is demonstrated in 2# seven-core PCF at a pump pulse repetition rate of 480 MHz. The potential of extending the spectral range and scaling the output power for the SC source based on multi-core PCFs are analyzed and discussed.
Keywords :
fibre lasers; high-speed optical techniques; holey fibres; integrated optics; optical fibre dispersion; optical pumping; photonic crystals; supercontinuum generation; PCF structure; all-fiber-integrated high-power broadband supercontinuum sources; fiber dispersion property; frequency 1.9 GHz; frequency 480 MHz; high-power fiber lasers; high-power supercontinuum generation; multicore PCF; multicore photonic crystal fibers; output power scaling; picosecond fiber laser; power 116 W; power 64 W; pump pulse repetition rate; single-core photonic crystal fiber; wavelength 500 nm to 1700 nm; Fiber lasers; Laser excitation; Optical fiber amplifiers; Optical fiber dispersion; Pump lasers; Fiber laser; fiber nonlinear optics; multi-core photonic crystal fiber; optical fibers; supercontinuum generation;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2014.2304136
