A polymer waveguide Y-branch power splitter with loss compensation is proposed based on NaYF4:Er^3+, Yb^3+ nanocrystals prepared by a high temperature thermal decomposition method. The Y-branch power splitter is desig...A polymer waveguide Y-branch power splitter with loss compensation is proposed based on NaYF4:Er^3+, Yb^3+ nanocrystals prepared by a high temperature thermal decomposition method. The Y-branch power splitter is designed as a structure of embedded waveguide, and its core material is nanocrystals-doped SU-8. The insertion loss of the device is ~ 15 dB. For an input signal power of 0.05 mW and a pump power of 267.7 mW, the two branches with 5.81-dB and5.41-dB loss compensations at 1530 nm are achieved respectively. A polymer waveguide Y-branch power splitter with loss compensation has an important research significance.展开更多
Octave-spanning optical frequency comb(OFC)generation has achieved great breakthroughs and enabled significant applications in many fields,such as optical clocks and spectroscopy.Here,we demonstrate octavespanning OFC...Octave-spanning optical frequency comb(OFC)generation has achieved great breakthroughs and enabled significant applications in many fields,such as optical clocks and spectroscopy.Here,we demonstrate octavespanning OFC generation with a repetition rate of tens of GHz via a four-wave mixing(FWM)effect seeded by a dual-mode microcavity laser for the first time,to our knowledge.A 120-m Brillouin nonlinear fiber loop is first utilized to generate wideband OFCs using the FWM effect.Subsequently,a time-domain optical pulse is shaped by appropriate optical filtering via fiber Bragg gratings.The high-repetition-rate pulse train is further boosted to11 p J through optimal optical amplification and dispersion compensation.Finally,an octave optical comb spanning from 1100 to 2200 nm is successfully realized through the self-phase modulation effect and dispersion wave generation in a commercial nonlinear optical fiber.Using dual-mode microcavity lasers with different mode intervals,we achieve frequency combs with octave bandwidths and repetition rates of 29–65 GHz,and demonstrate the dual-mode lasing microcavity laser as an ideal seeding light source for octave-spanning OFC generation.展开更多
基金Project supported by the Science and Technology Innovation Development Plan of Jilin City,China(Grant No.201830793)the Science and Technology Development Plan of Jilin Province,China(Grant No.20190302010GX)
文摘A polymer waveguide Y-branch power splitter with loss compensation is proposed based on NaYF4:Er^3+, Yb^3+ nanocrystals prepared by a high temperature thermal decomposition method. The Y-branch power splitter is designed as a structure of embedded waveguide, and its core material is nanocrystals-doped SU-8. The insertion loss of the device is ~ 15 dB. For an input signal power of 0.05 mW and a pump power of 267.7 mW, the two branches with 5.81-dB and5.41-dB loss compensations at 1530 nm are achieved respectively. A polymer waveguide Y-branch power splitter with loss compensation has an important research significance.
基金National Natural Science Foundation of China(61527823,61875188)。
文摘Octave-spanning optical frequency comb(OFC)generation has achieved great breakthroughs and enabled significant applications in many fields,such as optical clocks and spectroscopy.Here,we demonstrate octavespanning OFC generation with a repetition rate of tens of GHz via a four-wave mixing(FWM)effect seeded by a dual-mode microcavity laser for the first time,to our knowledge.A 120-m Brillouin nonlinear fiber loop is first utilized to generate wideband OFCs using the FWM effect.Subsequently,a time-domain optical pulse is shaped by appropriate optical filtering via fiber Bragg gratings.The high-repetition-rate pulse train is further boosted to11 p J through optimal optical amplification and dispersion compensation.Finally,an octave optical comb spanning from 1100 to 2200 nm is successfully realized through the self-phase modulation effect and dispersion wave generation in a commercial nonlinear optical fiber.Using dual-mode microcavity lasers with different mode intervals,we achieve frequency combs with octave bandwidths and repetition rates of 29–65 GHz,and demonstrate the dual-mode lasing microcavity laser as an ideal seeding light source for octave-spanning OFC generation.
