Widely tunable ultra-narrow-linewidth dissipative soliton generation at the telecom band  

作　　者：Chang Kyun Ha Ki Sang Lee Dohyeon Kwon Myeong Soo Kang 

机构地区：[1]Department of Physics,Korea Advanced Institute of Science and Technology(KAIST),Daejeon 34141,South Korea [2]School of Mechanical and Aerospace Engineering,Korea Advanced Institute of Science and Technology(KAIST),Daejeon 34141,South Korea

出　　处：《Photonics Research》2020年第7期1100-1109,共10页光子学研究（英文版）

基　　金：National Research Foundation of Korea(NRF-2019R1A2C2088839,NRF-2019R1H1A2079908)。

摘　　要：Ultra-narrow-linewidth mode-locked lasers with wide wavelength tunability can be versatile light sources for a variety of newly emergent applications.However,it is very challenging to achieve the stable mode locking of substantially long,anomalously dispersive fiber laser cavities employing a narrowband spectral filter at the telecom band.Here,we show that a nearly dispersion-insensitive dissipative mode-locking regime can be accessed through a subtle counterbalance among significantly narrowband spectral filtering,sufficiently deep saturable absorption,and moderately strong in-fiber Kerr nonlinearity.This achieves ultra-narrow-linewidth(a few gigahertz)nearly transform-limited self-starting stable dissipative soliton generation at low repetition rates(a few megahertz)without cavity dispersion management over a broad tuning range of wavelengths covering the entire telecom C-band.This unique laser may have immediate application as an idealized pump source for high-efficiency nonlinear frequency conversion and nonclassical light generation in dispersion-engineered tightly light-confining microphotonic/nanophotonic systems.

关 键 词：TUNABLE narrow SOLITON 

分 类 号：TN248[电子电信—物理电子学]