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Analytical method for gain in erbium doped fiber amplifier with pumb excited state absorption

G.R. Khan

Optical Fiber TechnologyJul 17, 20127 citations

Observation of polarization hole burning in Er-doped fiber for circular polarization of the saturating signal

V.J. Mazurczyk, Rogers H. Stolen, Jau-Sheng Wang +1 more

Polarization hole burning (PHB) has been observed in individual erbium-doped amplifiers.1 PHB means that a polarized saturating signal causes anisotropic saturation in an erbium- doped fiber (EDF). The resulting gain measured with a weak probe is maximum when the probe state of polarization (SOP) is orthogonal to the signal SOP and is minimum for the same SOP. The absorption is also anisotropic and is the compliment of the gain; i.e., where the gain is maximum the absorption is minimum and vice versa. The saturation anisotropy is characterized by the difference (in dB) between extrema for gain δG or the absorption δA. If the same order of subtraction is maintained, δG is positive and δA is negative.Polarization hole burning (PHB) has been observed in individual erbium-doped amplifiers.1 PHB means that a polarized saturating signal causes anisotropic saturation in an erbium- doped fiber (EDF). The resulting gain measured with a weak probe is maximum when the probe state of polarization (SOP) is orthogonal to the signal SOP and is minimum for the same SOP. The absorption is also anisotropic and is the compliment of the gain; i.e., where the gain is maximum the absorption is minimum and vice versa. The saturation anisotropy is characterized by the difference (in dB) between extrema for gain δG or the absorption δA. If the same order of subtraction is maintained, δG is positive and δA is negative.

Optical Fiber Communication ConferenceJan 1, 19958 citations

Optical Stimulated Amplification and Absorption in Erbium-Doped Fiber

Guoli Yin, Xianglin Yang, Mingde Zhang

Transactions of the Institute of Electronics, Information and Communication EngineersJan 25, 19920 citations

Direct Observation of Signal Evolution of Slow and Fast Light in Erbium-Doped Optical Fiber

王号 Wang Hao, 掌蕴东 Zhang Yundong, 叶建波 Ye Jianbo +4 more

Acta Optica SinicaJan 1, 20091 citation

Research on group velocity slowdown in erbium-doped optical fiber under controllable absorption loss

Qiu Wei, Zhang Yun-Dong, Jianbo Ye +6 more

Group velocity of the optical pulse propagation would be reduced based on coherent population oscillation effect in an absorbing medium. According to the absorption properties of erbium-doped optical fiber, there would appear a sharp absorption loss, which brought more difficulties to the actual measurement of slow light and its application in communications. From the ground rate equation of erbium-ion, the delay of optical pulse was simulated under controllable absorption loss， and experiments were implemented to verify the theoretical results. Moreover, we researched how the different pump power and fiber length effect the signal loss and the optical pulse delay.Group velocity of the optical pulse propagation would be reduced based on coherent population oscillation effect in an absorbing medium. According to the absorption properties of erbium-doped optical fiber, there would appear a sharp absorption loss, which brought more difficulties to the actual measurement of slow light and its application in communications. From the ground rate equation of erbium-ion, the delay of optical pulse was simulated under controllable absorption loss， and experiments were implemented to verify the theoretical results. Moreover, we researched how the different pump power and fiber length effect the signal loss and the optical pulse delay.

Acta Physica SinicaJan 1, 20081 citation

Signal Evolution of Slow and Fast Light in Erbium Doped Fiber

Hao Wang, Chunguang Zhang

Recently, researches about the controllable group velocity of light propagation had made many progresses. And several experiments had demonstrated the signal evolution of slow and fast light. In this letter, the authors described a simple experiment for the tracing of light signals in an erbium-doped optical fiber at the optical communication wavelength firstly. We have, directly, observed the evolution of slow and fast signals with different waveforms that travel in an erbium-doped fiber amplifier. Through tracing the signal evolution, when slow light (Vg<;<;c) or fast light (Vg<;0) was got in it, we concluded that asymmetrical absorption and amplification on the periodical signal could account for the generation of slow and fast light in an erbium-doped fiber amplifier easily.Recently, researches about the controllable group velocity of light propagation had made many progresses. And several experiments had demonstrated the signal evolution of slow and fast light. In this letter, the authors described a simple experiment for the tracing of light signals in an erbium-doped optical fiber at the optical communication wavelength firstly. We have, directly, observed the evolution of slow and fast signals with different waveforms that travel in an erbium-doped fiber amplifier. Through tracing the signal evolution, when slow light (Vg<;<;c) or fast light (Vg<;0) was got in it, we concluded that asymmetrical absorption and amplification on the periodical signal could account for the generation of slow and fast light in an erbium-doped fiber amplifier easily.

Symposium on Photonics and OptoelectronicsJun 1, 20100 citations

Phase control of absorption, dispersion and gain of weak signal field in erbium doped optical fiber

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