Optical fiber amplifier (EDFA) for wavelength-division multiplexing systems by Guo, Xin.

“…In this thesis, based on the study of various gain-flattening and gain-control techniques, the author has proposed and demonstated a new configuration of gain-equalized EDFA for WDM systems by using short-period fiber Bragg grating (FBGs).…”
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Gain equalization of EDFA using a loop filter with a single polarization controller by Zhou, Kejiang, Pan, Shuming, Ngo, Nam Quoc, Zhang, Xulin

“…Gain equalization of erbium-doped fiber amplifiers (EDFAs) is implemented by tuning only the polarization controller in the loop filter. …”
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Broad-band EDFA gain flattening by using an embedded long-period fiber grating filter by Dong, X. Y., Ni, Na, Chan, Chi Chiu, Tan, Khay Ming, Tjin, Swee Chuan

“…An erbium-doped fiber amplifier (EDFA) gain flattening technique using an embedded long period grating (ELPG) is proposed. …”
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Optically controlled phased-array antennas using chriped-fiber gratings by Ng, Jun Jie.

“…As such, a suggested topology is to include an erbium-doped fiber amplifier (EDFA) in the system to amplifier the signal strength. …”
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Development of novel applications of optical amplifiers in optical communication networks by Guo, Ning

“…EDFA has larger gain, lower pump power and generally amplifies C and L band signals. …”
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Telecommunication techniques and systems (III) by Lu, Chao., Guo Xin., Lew, Yew Kwee.

“…In this report, based on the study of various gain-flattening and gain-control techniques, the investigators have proposed and demonstrated a new configuration of gain-equalized EDFA for WDM systems by using short-period fiber Bragg gratings (FBGs). …”
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Study and development of advanced packaging technique for semiconductor lasers by Teo, Ronnie Jin Wah

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Development of high performance fiber Raman amplication systems for optical fiber communications by Tang, Ming

“…Compared with the lumped erbium-doped fiber amplifier (EDFA), the distributed Raman amplification (DRA) takes the advantages that: 1) amplification can be provided at any frequency by simply changing the pump wavelength; 2) any existing transmission line can be upgraded directly to DRA by simply adding pumps accordingly; 3) the Raman gain distributed over tens of kilometers of transmission fiber provides in a superior end-ofsystem optical signal-to-noise-ratio (OSNR).…”
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Hybrid fiber laser for optical communication and industrial applications by Lu, Xiaona.

“…The first objective is to demonstrate a novel single-longitudinal mode (SLM) multiple-dual-wavelength fiber laser (MDWFL) incorporating an erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) in the actively mode-locked ring cavity. …”
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Thulium doped fiber based lasers and amplifiers by Chen, Shaoxiang

“…Considering the long wavelength edge of extended L-band EDFA at 1620nm, there is an obvious gap between L-band EDFA and state-of-the-art TDFAs. …”
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Optimization and application of broadband fiber Raman amplifiers by Li, Zhaohui

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Investigation on long-reach broadcast/multicast-capable WDM-PON by Cai, Frank Laifa

“…At the Central Office (CO), two DRAs are used by employing co-propagating pumping technique to achieve high gain after propagating through a 120km feeder fiber. In addition, an EDFA was also employed just before the demultiplexer at the CO to amplify the uplink transmission signals. …”
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Development of cavity ringdown long period grating pressure sensor. by Wong, Wei Chang.

“…This sensor measures the intensity of an input pulse as it is subjected to losses comprised of the fiber absorption loss, the fiber couplers insertion loss, the fiber scattering loss, attenuator loss, LPG transmission attenuation and deduction of erbium-doped fiber amplifier’s (EDFA) gain. The derivation of equations for the relationship between those losses of cavity ring-down and long period gratings with pressure is shown. …”
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Nyquist WDM superchannel using offset-16QAM and receiver-side digital spectral shaping by Xiang, Meng, Fu, Songnian, Tang, Ming, Tang, Haoyuan, Shum, Perry, Liu, Deming

“…Furthermore, the range of launched optical power allowed beyond HD-FEC threshold is drastically increased from −6 dBm to 1.2 dBm, after 960 km SSMF transmission with EDFA-only. In particular, no more than 1.8 dB required OSNR penalty at BER = 10−3 is achieved for the proposed system even with the phase difference between channels varying from 0 to 360 degree.…”
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Applications of four-wave mixing and cross phase modulation in highly nonlinear fibers by Seyedeh Bentolhoda Nazemosadat Arsanjani

“…Hence, to overcome the bandwidth limitation of EDFAs, alternative optical amplifiers have been investigated. …”
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Broadband supercontinuum generation in specialty fibers by Yemineni, Sivasankara Rao

“…For efficient activation of nonlinear phenomena inside each specialty fibre and, also to study the variation of spectral broadening with respect to the variation in input pulse power, the pulse power is further boosted through the amplification using a pulsed erbium-doped fibre amplifier (EDFA). The spectral broadening inside a 60-meter-long PCF with respect to the variation in input pulse power is observed. …”
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Laser focus depth adaptation for decapsulation of copper wirebonded devices by Kor, Katherine Hwee Boon, Liu, Qing, Siah, Yu Wen, Gan, Chee Lip

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