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erbium Doped Fiber Amplifier Gain Flattening Using Long-Period Fiber Gratings

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Chinese Physics Letters 1999年第7期16卷 513-515页

作者：陈根祥简水生李唐军刘春宁谢增华 Institute of Lightwave Technology Northern Jiaotong UniversityBeijing 100044

Based on theoretical and experimental studies on the optical properties of long-period gratings(LPGs),an erbium doped fiber amplifier(EDFA)gain equalizer was fabricated by writing three long period gratings with designed properties in hydrogen-loaded standard single-mode fibers.The LPGs were written by a KrF excimer laser at 248 nm with amplitude masks.The gain variation of±3dB in the EDFA is reduced to±0.3 dB with a bandwidth of 30 nm and the total insertion loss of the device is less than 0.3 dB.

关键词： amplifier erbium KrF

A Switchable Multi-wavelength erbium-Doped Photonic Crystal Fiber Laser with Linear Cavity Configuration

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Chinese Physics Letters 2012年第12期29卷 86-88页

作者：郑婉君成建群阮双琛张敏刘文礼杨西张莹莹 Shenzhen Key Laboratory of Laser Engineering College of Electronic Science and TechnologyShenzhen UniversityShenzhen 518060

A switchable multi-wavelength erbium-doped photonic crystal fiber laser with a linear cavity configuration based on a Sagnac loop mirror is proposed and demonstrated experimentally.The laser is based on saturated spectral hole burning and the polarization hole burning effects can be switched among single-wavelength,dual-wavelength,triple-wavelength and quadruple-wavelength outputs at room temperature.The wavelength period of the output spectrum is easily varied by using polarization maintaining fibers of different lengths.The proposed fiber laser has a signal-to-noise ratio of higher than 30 dB and achieves a low threshold power of 37 mW.The power fluctuations of the lasing lines are less than 0.54 dB,1.7 dB and 2.9 dB when the laser operates at single-wavelength,dual-wavelength and triple-wavelength for one hour.

关键词： polarization erbium switched

A Q-Switched erbium-Doped Fiber Laser with a Carbon Nanotube Based Saturable Absorber

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Chinese Physics Letters 2012年第11期29卷 67-69页

作者： S.W.Harun M.A.Ismail F.Ahmad M.F.Ismail R.M.Nor N.R.Zulkepely H.Ahmad Department of Electrical Engineering University of Malaya 50603 Kuala LumpurMalaysia Photonics Research Center Department of PhysicsUniversity of Malaya50603 Kuala LumpurMalaysia Department of Physics University of Malaya50603 Kuala LumpurMalaysia

We demonstrate a simple,compact and low cost Q-switched erbium-doped fiber laser(EDFL)using single-wall carbon nanotubes(CNTs)as a saturable absorber for possible applications in metrology,sensing,and medical diagnostics.The EDFL operates at around 1560 nm with repetition rates of 16.1 kHz and 6.4 kHz with saturable absorbers SA1 and SA2 at a pump power of 120 mW.The absorbers are constructed by optically driven deposition and normal deposition techniques.It is observed that the optical deposition method produces a Q-switched EDFL with a lower threshold of 70 mW and better Q-switching performance compared to that of the normal deposition method.The EDFL also has pulse energy of 90.3 nJ and pulse width of 11.6μs at 120 mW pump power.

关键词： pump switched erbium

Flattening Spectrum of a Broadband and Wavelength Stable erbium Doped Superfluorescent Fiber Source

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Chinese Physics Letters 1999年第5期16卷 356-357页

作者：杨宝明海郭阳谢建平 Department of Physics University of Science and Technology of ChinaHefei 230026

A technique is used to design the spectra in erbium doped superfluorescent fiber source experimentally and theoretically.In an erbium doped fiber with a 10m length and 300ppm concentration,a line width of about 42nm a... 详细信息

关键词： fiber amplifier erbium

Performance Comparison of Mode-Locked erbium-Doped Fiber Laser with Nonlinear Polarization Rotation and Saturable Absorber Approaches

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Chinese Physics Letters 2012年第5期29卷 154-156页

作者： M.A.Ismail S.J.Tan N.S.Shahabuddin S.W.Harun H.Arof H.Ahmad Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya50603 Kuala LumpurMalaysia Photonics Research Center Department of PhysicsUniversity of Malaya50603 Kuala LumpurMalaysia

A mode-locked erbium-doped fiber laser (EDFL) is demonstrated using a highly concentrated erbium-doped fiber (EDF) as the gain medium in a ring configuration with and without a saturable absorber (SA).Without the SA,the proposed laser generates soliton pulses with a repetition rate of 12 MHz,pulse width of 1.11 ps and energy pulse of 1.6pJ.By incorporating SA in the ring cavity,the optical output of the laser changes from soliton to stretched pulses due to the slight change in the group velocity dispersion.With the SA,a cleaner pulse is obtained with a repetition rate of 11.3 MHz,a pulse width of 0.58ps and a pulse energy of 2.3pJ.

关键词： pulse fiber erbium

Effect of Multiple Depositions and Annealing Treatments on the erbium Silicide Nanoislands Self-Assembled on Si(001)Substrates

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Chinese Physics Letters 2012年第3期29卷 176-179页

作者：丁涛宋君强蔡群 Institute of Precision Optical Engineering Department of PhysicsTongji UniversityShanghai 200092 State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433 CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050

erbium silicide nanoislands on Si(001)surface are fabricated by novel multiple depositions and annealing treatments method.The morphological investigations determine that the islands could grow with stable square shapes rather than the shape transformation exhibited in the traditional single time evaporation growth.Size distributions analyses further elucidate the effect of multiple depositions and annealing treatments on the nanoisland growth.It is suggested that strain relaxation and static coMescence play important roles in the cyclic growth.Specifically,after 15 times of the cycles,the larger islands are found to undergo the Ostwald ripening,which make the shape of nanoislands irregular.This gives us the direction to adjust the growth parameters to control the island morphology.Furthermore,the crystalline structure of the Er silicide nanoislands is efficiently characterized by grazing incidence synchrotron x-ray diffraction.

关键词： erbium island annealing

erbium Doped Fiber Laser and Amplifier

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Optics and Photonics Journal 2014年第7期4卷 189-193页

作者： Belloui Bouzid Electrical Engineering Department Affiliated Colleges Hafr Al-Batin King Fahd University of Petroleum and Minerals (KFUPM) Riyadh KSA

In this paper, new configuration is proposed, investigated and analyzed. Fiber laser and fiber amplifier are merged in one configuration which called erbium Doped Fiber Laser and Amplifier (EDFLA) or integrating EDFL and EDFA in one design. The configuration has three main outputs;one for laser, second for amplifier and the third it can be used for on/off output. A surprising phenomenon was remarked during the operation of this configuration. The amplification is abolished during the lasing state and appeared again if the lasing is stopped or the switch is off. The difference between outputs with the lasing and without lasing has 30 dB EDFA gain value;it is a good sign that this optical configuration can be used as an on/off integrated optical device for fiber laser.

关键词： erbium Doped Fiber Amplifier erbium Doped Fiber Laser Lasing Amplification

Optical and spectroscopic properties of a new erbium-doped soda-lime-alumino-silicate glass for integrated optical amplifiers

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Optical and spectroscopic properties of a new erbium-doped s...

Fabrication of erbium and Ytterbium Co-Doped Tantalum-Oxide Thin Films Using Radio-Frequency Co-Sputtering

20th Congress of the International Commission for Optics

作者： S.Berneschi M.Bettinelli M.Brenci R.Calzolai A.Chiasera M.Ferrari M.Matterelli M.Montagna G.Nunzi Conti S.Pelli S.Sebastiani S.Siligardi A.Speghini G.C.Righini Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Electronics Computer Science and Systems Department （DEIS） University of Bologna 40100 Bologna Italy Scientific and Technologic Department University of Verona 37134 Verona Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Physics Department University of Trento 38050 Povo （Trento） Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Material Engineering Department （DIMA） University of Modena-Reggio Emilia 41100 Modena Italy Scientific and Technologic Department University of Verona 37134 Verona Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy

Silicate glasses are among the best hosts for rare-earth ions, especially for the development of integrated optic amplifiers and lasers, due to their chemical robustness and adaptability to different

关键词： Alumino-Silicate Glasses Ion-Exchange erbium Optical Amplifier Integrated Optics

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Materials Sciences and Applications 2015年第5期6卷 343-347页

作者： Kenta Miura Yuki Arai Kazusa Kano Osamu Hanaizumi Graduate School of Science and Technology Gunma University Kiryu Japan

An erbium and ytterbium co-doped tantalum-oxide (Ta2 O5:Er, Yb) thin film was fabricated using a simple co-sputtering method for the first time, and its photoluminescence (PL) spectrum was evaluated. Energy transfers between Er3+ and Yb3+ in the Ta2 O5:Er, Yb co-sputtered thin film were discussed by comparing between PL spectra of the Ta2 O5:Er, Yb film and Ta2 O5:Er or Ta2 O5:Yb films reported in our previous works. Such a Ta2 O5:Er, Yb co-sputtered film can be used as a high-refractive- index and light-emitting material of a multilayered photonic crystal that can be applied to a novel light-emitting device, and it will also be used as a multi-functional coating film having both anti-reflection and down-conversion effects for realizing a high-efficiency silicon solar cell.

关键词： Tantalum Oxide erbium Ytterbium Co-Sputtering Photoluminescence