We experimentally study the chaotic behaviors in a compact all-fiber erbium-doped fiber ring laser （ED-FRL） with an added Mach-Zehnder interferometer （MZI） by using a phase-modulation method. A piezo-electric cera...We experimentally study the chaotic behaviors in a compact all-fiber erbium-doped fiber ring laser （ED-FRL） with an added Mach-Zehnder interferometer （MZI） by using a phase-modulation method. A piezo-electric ceramic transducer （PZT） is incorporated in the MZI to introduce single-frequency phase modulation. The coexistence of intermitteney and period-doubling bifurcation routes to chaos in the EDFRL system is observed by adjusting the modulation frequency or the phase modulation depth in the experiment. In addition, the EDFRL presents irregular multi-longitudinal-mode oscillation with a definite linear polarization when operating at intensity chaos state.展开更多
Multi-wavelength fiber ring laser based on the semiconductor optical amplifier(SOA)with sampled fiber Bragg grating(SFBG)in a Sagnac loop interferometer as the wavelength-selective filter is proposed.Four lasing wavel...Multi-wavelength fiber ring laser based on the semiconductor optical amplifier(SOA)with sampled fiber Bragg grating(SFBG)in a Sagnac loop interferometer as the wavelength-selective filter is proposed.Four lasing wavelengths with 1.8 nm spacing have been generated stably at room temperature.The proposed laser has the advan-tages such as removal of the high-cost circulator,flexibility in channel-spacing tuning,and simple all-optical fiber configuration,which has potential applications in high-capacity wavelength-division-multiplexed(WDM)systems and mechanical sensors.展开更多
Aring-shaped all fiber tunable Yb-doped fiber laser with tuning range over 20 nm is demonstrated by using a fiber Mach-Zenhder interferometer as an intra-cavity filter which is constructed with two 3-dB optical couple...Aring-shaped all fiber tunable Yb-doped fiber laser with tuning range over 20 nm is demonstrated by using a fiber Mach-Zenhder interferometer as an intra-cavity filter which is constructed with two 3-dB optical couplers.The method for fabricating the fiber Mach-Zenhder interferometer is detailed.The fiber laser has a moderate milli-Watt level output power over the whole tuning range from 1050 to 1071 nm,a side-band suppression ratio greater than 45 dB,and a bandwidth less than 0.1 nm.展开更多
基金the National Natural Science Foundation of China under Grant No.11274384
文摘We experimentally study the chaotic behaviors in a compact all-fiber erbium-doped fiber ring laser （ED-FRL） with an added Mach-Zehnder interferometer （MZI） by using a phase-modulation method. A piezo-electric ceramic transducer （PZT） is incorporated in the MZI to introduce single-frequency phase modulation. The coexistence of intermitteney and period-doubling bifurcation routes to chaos in the EDFRL system is observed by adjusting the modulation frequency or the phase modulation depth in the experiment. In addition, the EDFRL presents irregular multi-longitudinal-mode oscillation with a definite linear polarization when operating at intensity chaos state.
基金supported by the National“863” Project of China(2007AA01Z258)the National Natural Science Foundation of China(60771008)+2 种基金Program for New Century Excellent Talents in University(NCET-06-0076)Beijing Natural Science Foundation(4082024)the Beijing Jiaotong University Foundation(2006XM003)
文摘Multi-wavelength fiber ring laser based on the semiconductor optical amplifier(SOA)with sampled fiber Bragg grating(SFBG)in a Sagnac loop interferometer as the wavelength-selective filter is proposed.Four lasing wavelengths with 1.8 nm spacing have been generated stably at room temperature.The proposed laser has the advan-tages such as removal of the high-cost circulator,flexibility in channel-spacing tuning,and simple all-optical fiber configuration,which has potential applications in high-capacity wavelength-division-multiplexed(WDM)systems and mechanical sensors.
基金partly supported by the Natural Science Foundation of China (60577026)the program for NCET in University, and the National "973" Program of China(2007CB307003).
文摘Aring-shaped all fiber tunable Yb-doped fiber laser with tuning range over 20 nm is demonstrated by using a fiber Mach-Zenhder interferometer as an intra-cavity filter which is constructed with two 3-dB optical couplers.The method for fabricating the fiber Mach-Zenhder interferometer is detailed.The fiber laser has a moderate milli-Watt level output power over the whole tuning range from 1050 to 1071 nm,a side-band suppression ratio greater than 45 dB,and a bandwidth less than 0.1 nm.
