Gain‐clamping in L‐band zirconium–erbium co‐doped fiber amplifier with FBG based lasing control

2021 ◽  
Author(s):  
Serif Ali Sadik ◽  
Firat Ertac Durak ◽  
Mukul Chandra Paul ◽  
Nur Farhanah Zulkipli ◽  
Ahmet Altuncu ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Gain Clamping ◽  
L Band ◽  
Co Doped

scholarly journals Cladding-pumped L-band phosphosilicate erbium-ytterbium co-doped fiber amplifier

2003 ◽  
Author(s):  
C. Codemard ◽  
D. B. S. Soh ◽  
K. Ylä-Jarkko ◽  
J. K. Sahu ◽  
M. Laroche ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
L Band ◽  
Co Doped

L-BAND EDFA WITH INJECTION OF C-BAND ASE

2004 ◽  
Vol 13 (02) ◽  
pp. 315-319
Author(s):  
S. W. HARUN ◽  
H. AHMAD
Keyword(s):  
Noise Figure ◽  
Fiber Amplifier ◽  
Injection Technique ◽  
Small Signal Gain ◽  
Small Signal ◽  
Erbium Doped Fiber Amplifier ◽  
Gain Variation ◽  
Erbium Doped ◽  
Gain Clamping ◽  
L Band

The effect of injecting of C-band amplified spontaneous emission (ASE) from C-band erbium-doped fiber amplifier (EDFA) on the performance of L-band EDFA is demonstrated using a circulator and broadband fiber Bragg grating (FBG). Injecting a large amount of ASE (VOA=0 dB) clamps the gain at 15.2 dB from -40 to -10 dBm with a gain variation of less than 0.3 dB. Injecting a small amount of ASE (attenuation of 20 dB and above) improves the small signal gain with a negligible noise figure penalty compared to that of an amplifier without the ASE injection. A maximum gain improvement of 3.5 dB is obtained at an attenuation of 20 dB. These results show that the ASE injection technique can be used either for gain improvement or gain clamping in L-band EDFA.

Gain and Noise Figure Performances of L–Band EDFA with an Injection of C–Band ASE

2012 ◽  
Author(s):  
Sulaiman Wadi Harun ◽  
T. Subramaniam ◽  
Nizam Tamchek ◽  
Harith Ahmad
Keyword(s):  
Spontaneous Emission ◽  
Noise Figure ◽  
Amplified Spontaneous Emission ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Injection Technique ◽  
Erbium Doped Fiber Amplifier ◽  
Gain Enhancement ◽  
Gain Clamping ◽  
L Band

Kesan suntikan pancaran spontan terkuat (ASE) jalur–C terhadap prestasi jalur–L penguat gentian terdop–erbium (EDFA) ditunjukkan. Sebuah pekeliling dan parutan gentian Bragg lebar jalur luas digunakan untuk menyalurkan ASE jalur–C ke dalam sistem penguat. Dengan penyuntikan sejumlah kecil ASE (20 dB pelemahan dan lebih), gandaan isyarat kecil ditingkatkan tanpa peningkatan nilai hingar berbanding penguat tanpa suntikan ASE. Peningkatan gandaan maksimum adalah sebanyak 3.5 dB dan dicapai semasa pelemahan 20 dB untuk isyarat 1580 nm. Walau bagaimanapun, jika penguat disuntik dengan jumlah ASE yang besar (VOA=0 dB), gandaan penguat didapati mendatar pada 15.2 dB dari –40 hingga –10 dBm dengan variasi gandaan kurang daripada 0.3 dB. Kuasa tepu juga bertambah dari –8 dBm (semasa tiada ASE) kepada 2 dBm (VOA=0 dB) dengan sedikit peningkatan nilai hingar. Keputusan ini menunjukkan bahawa teknik menyuntik ASE boleh digunakan sama ada untuk meningkatkan gandaan atau untuk menetapkan nilai gandaan dalam EDFA jalur–L. Kata kunci: Penetapan gandaan, penguat optik, EDFA jalur-L, penambahan gandaan, pancaran spontan terkuat The effect of injecting conventional band amplified spontaneous emission (C–band ASE) on the performance of long wavelength band erbium–doped fiber amplifier (L–band EDFA) is demonstrated. A circulator and a broadband fiber Bragg grating (FBG) were used to route a C–band ASE into amplifier system. Injection of a small amount of ASE (attenuation of 20 dB and above) improves the small signal gain with a negligible noise figure penalty compared to that of an amplifier without the ASE injection. A maximum gain improvement of 3.5 dB is obtained at an attenuation of 20 dB for signal wavelength of 1580 nm. At very large amount of ASE injection (VOA=0 dB), the gain of the amplifier is clamped at 15.2 dB from –40 to –10 dBm with a gain variation of less than 0.3 dB. The saturation power is also increased from –8 dBm (for without ASE injection) to 2 dBm (VOA=0 dB) with a slight noise figure penalty. These results show that the ASE injection technique can be used either for gain improvement or gain clamping in L–band EDFA. Keywords: Gain clamping, optical amplifier, L-band EDFA, gain enhancement, amplified spontaneous emission

Optimized flat supercontinuum generation in high nonlinear fibers pumped by a nanosecond Er/Yb Co-doped fiber amplifier

Laser Physics ◽  
2014 ◽  
Vol 24 (4) ◽  
pp. 045104 ◽  
Author(s):  
D Q Ouyang ◽  
C Y Guo ◽  
S C Ruan ◽  
P G Yan ◽  
H F Wei ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Supercontinuum Generation ◽  
Nonlinear Fibers ◽  
Co Doped

Gain-Clamped L-Band Erbium-Doped Fiber Amplifier with Co- and Counter-Propagating Lasers

2003 ◽  
Vol 42 (Part 2, No. 10B) ◽  
pp. L1262-L1264 ◽  
Author(s):  
Sulaiman Wadi Harun ◽  
Nizam Tamchek ◽  
Prabakaran Poopalan ◽  
Harith Ahmad
Keyword(s):  
Fiber Amplifier ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped ◽  
L Band

scholarly journals Gain improvement by internal laser cavity in Tm3+/Yb3+-co-doped tellurite fiber amplifier pumped by 980-nm laser

2006 ◽  
Vol 14 (19) ◽  
pp. 8535 ◽  
Author(s):  
Jun Chang ◽  
Qingpu Wang ◽  
Gangding Peng ◽  
Xingyu Zhang ◽  
Zejin Liu ◽  
...  
Keyword(s):  
Laser Cavity ◽  
Fiber Amplifier ◽  
Co Doped
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