Journal ArticleDOI
Gain enhancement in L-band EDFA through a double-pass technique
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TLDR
In this paper, an improvement of gain in the long-wavelength band (L-band) was observed by double passing the forward amplified spontaneous emission and signal in the erbium-doped fiber (EDF) using a circulator, unlike conventional single pass amplification.Abstract:
An improvement of gain in the long-wavelength band (L-band) is observed by double passing the forward amplified spontaneous emission and signal in the erbium-doped fiber (EDF) using a circulator, unlike conventional single pass amplification. A gain enhancement as high as 11 dB is obtained for a 1570-nm signal with an input power of -20 dBm at 98 mW of pump power. However, a noise figure penalty of about 2 dB is observed.read more
Citations
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Journal ArticleDOI
Double-pass L-band EDFA with enhanced noise figure characteristics
TL;DR: In this paper, a double-pass long wavelength band erbium-doped fiber amplifier with enhanced noise figure characteristics is demonstrated by adding a short length of forward-pumped EDF in front of a double pass amplifier.
Journal ArticleDOI
A dual pumped double-pass L-band EDFA with high gain and low noise
TL;DR: In this article, a double-pass EDF amplifier with a narrow-band Bragg grating at each channel wavelength is used to back-reflect the L-band signal to make it amplified twice by the pair of EDFs.
Journal ArticleDOI
Improvement of gain and noise figure in double-pass L-band EDFA by incorporating a fiber Bragg grating
TL;DR: In this article, a double-pass L-band erbium-doped fiber amplifier (EDFA) with incorporating a fiber Bragg grating (FBG) was demonstrated.
Patent
Long wavelength optical amplifier
Aydin Yeniay,Renyuan Gao +1 more
TL;DR: An L band optical amplifier is described in this article, which includes a signal line which has an input, an output disposed optically downstream of the input, and an amplifying gain medium optically disposed between the input and the output.
Journal ArticleDOI
High-gain, polarization-preserving, Yb-doped fiber amplifier for low-duty-cycle pulse amplification.
TL;DR: In this paper, Amplified spontaneous emission suppression techniques were used to fabricate a double-pass, Yb-doped amplifier with the noise properties of a single-pass amplifier.
References
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Journal ArticleDOI
Enhancement of power conversion efficiency for an L-band EDFA with a secondary pumping effect in the unpumped EDF section
TL;DR: In this article, a novel structure which utilizes detrimental backward amplified spontaneous emission as a secondary pump source is suggested for a silica-based fiber amplifier, operating at a wavelength range from 1570 to 1610 nm.
Journal ArticleDOI
Low noise operation of Er3+ doped silica fibre amplifier around 1.6 μm
TL;DR: In this article, a novel method of using two pump wavelengths to achieve high gains and enhanced noise performance in the 1.6 μm Er3+ doped fiber amplifier is demonstrated.
Journal ArticleDOI
Long-wavelength EDFA gain enhancement through 1550 nm band signal injection
Mohd Adzir Mahdi,F. R. Mahamd Adikan,Prabakaran Poopalan,S. Selvakennedy,W.Y Chan,Harith Ahmad +5 more
TL;DR: In this article, an experiment on gain enhancement in the long band (L-band) was conducted and the authors achieved gain enhancement as high as 5.3 dB at −15 dBm of 1535 nm injected signal.