scholarly journals Enhanced 1.5 μm emission from Yb3+/Er3+ codoped tungsten tellurite glasses for broadband near-infrared optical fiber amplifiers and tunable fiber lasers

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 27992-27999
Author(s):  
Jian Yuan ◽  
Guodong Zheng ◽  
Yingyi Ye ◽  
Yongbin Chen ◽  
Tingting Deng ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Figure Of Merit ◽  
Near Infrared ◽  
Tellurite Glass ◽  
Fiber Amplifiers ◽  
Tellurite Glasses ◽  
Gain Bandwidth ◽  
Present Glass ◽  
Optical Fiber Amplifiers ◽  
Infrared Optical Fiber

Strong 1.5 μm emission with full width at half maximum of 64 nm is achieved in 3 mol% Yb2O3 and 1 mol% Er2O3 codoped tungsten tellurite glass. The present glass shows large gain bandwidth (6.78 × 10−26 cm3) and figure of merit (4.06 × 10−23 cm2 s).

Broadband ~1.5μm Emission of Er3+ in Heavy Metal Germanium Tellurite Glasses for Optical Fiber Amplifier

2011 ◽  
Vol 299-300 ◽  
pp. 538-541
Author(s):  
Xiao Liu ◽  
Quan Shen ◽  
Hai Lin ◽  
Dian Lai Yang
Keyword(s):  
Figure Of Merit ◽  
Emission Cross Section ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Stimulated Emission ◽  
Tellurite Glasses ◽  
Gain Bandwidth ◽  
Optical Fiber Amplifier ◽  
Intensity Parameters ◽  
Ir Emission

In Er3+/Yb3+codoped Na2O-ZnO-PbO-GeO2-TeO2(NZPGT) glasses, effective ~1.5mm infrared (IR) emission was investigated under 980nm excitation. Judd-Ofelt intensity parameters Wt (t = 2, 4, 6) had been calculated to be 6.78´10-20, 1.54´10-20, and 1.17´10-20cm2,respectively. The IR emission full width at half maximum (FWHM) is 73nm, and the maximum stimulated emission cross-section (se) is derived to be 7.53×10-21cm2. A figure of merit (FOM) as the product FWHM´se is adopted to evaluate the gain bandwidth. The comparison of FOM in different glasses indicated that Er3+/Yb3+codoped NZPGT glasses were potential materials in developing broadband optical amplifier.

scholarly journals Fiber Amplifiers and Fiber Lasers Based on Stimulated Raman Scattering: A Review

Micromachines ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 247 ◽  
Author(s):  
Luigi Sirleto ◽  
Maria Antonietta Ferrara
Keyword(s):  
High Power ◽  
Communication Systems ◽  
Fiber Lasers ◽  
Near Infrared ◽  
High Efficiency ◽  
Stimulated Raman Scattering ◽  
Spectral Band ◽  
High Capacity ◽  
Raman Laser ◽  
Fiber Amplifiers

Nowadays, in fiber optic communications the growing demand in terms of transmission capacity has been fulfilling the entire spectral band of the erbium-doped fiber amplifiers (EDFAs). This dramatic increase in bandwidth rules out the use of EDFAs, leaving fiber Raman amplifiers (FRAs) as the key devices for future amplification requirements. On the other hand, in the field of high-power fiber lasers, a very attractive option is provided by fiber Raman lasers (FRLs), due to their high output power, high efficiency and broad gain bandwidth, covering almost the entire near-infrared region. This paper reviews the challenges, achievements and perspectives of both fiber Raman amplifier and fiber Raman laser. They are enabling technologies for implementation of high-capacity optical communication systems and for the realization of high power fiber lasers, respectively.

Dy3+-doped chalcohalide glass for 1.3-μm optical fiber amplifiers

2008 ◽  
Vol 23 (4) ◽  
pp. 954-961 ◽  
Author(s):  
Gao Tang ◽  
Zhiyong Yang ◽  
Lan Luo ◽  
Wei Chen
Keyword(s):  
Optical Fiber ◽  
Near Infrared ◽  
Fiber Amplifier ◽  
Fiber Amplifiers ◽  
Molar Ratio ◽  
Thermal Stabilities ◽  
Optical Fiber Amplifier ◽  
Chalcohalide Glasses ◽  
Doped Glasses ◽  
Optical Fiber Amplifiers

Dy3+-doped GeSe2–Ga2Se3–CsI chalcohalide glasses were prepared. The thermal stabilities, optical properties, emission properties, and structure of the glasses were investigated. Upon excitation with a 808-nm diode laser, 1.32-μm near-infrared fluorescence was observed with a broad full width at half-maximum of about 90 nm. It was found the 1.32-μm fluorescence lifetime of the Dy3+-doped GeSe2–Ga2Se3–CsI glass depends on the I/Ga molar ratio and the amount of Ga2Se3 and CsI. The longest lifetime is >2.5 ms. It is noted that the value is significantly higher than those in other Dy3+-doped glasses. The enhancement of lifetime can be attributed to a decreased local phonon mode, which dominates the multiphonon relaxation. Meanwhile, it is interesting to note that the GeSe2–Ga2Se3–CsI glasses have shown good infrared transmittance. As a result, Dy3+-doped GeSe2–Ga2Se3–CsI glasses have been considered to be an attractive host for a 1.3-μm optical fiber amplifier.

scholarly journals Tellurite Glass and Its Application in Lasers

2020 ◽  
Author(s):  
Pengfei Wang ◽  
Shijie Jia ◽  
Xiaosong Lu ◽  
Yuxuan Jiang ◽  
Jibo Yu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Fibers ◽  
Near Infrared ◽  
Tellurite Glass ◽  
Tellurite Glasses ◽  
Laser Applications ◽  
Mid Infrared ◽  
Microcavity Lasers ◽  
Optical Microcavities ◽  
Laser Devices

This chapter provides expert coverage of the physical properties of new noncrystalline solids—tellurite glass and the latest laser applications of the material—offering insights into innovative applications for laser and sensing devices, among others. In particular, there is a focus on specialty optical fibers, supercontinuum generation and laser devices, and luminescence properties for laser applications. This chapter also addresses the fabrication and optical properties and uses of tellurite glasses in optical fibers and optical microcavities, the significance of from near infrared (NIR) to mid-infrared (MIR) emissions and the development of tellurite glass-based microcavity lasers. The important attributes of these tellurite glasses and their applications in lasers were discussed in this chapter.

scholarly journals Index matching between passive and active tellurite glasses for use in microstructured fiber lasers: Erbium doped lanthanum-tellurite glass

2009 ◽  
Vol 17 (18) ◽  
pp. 15578 ◽  
Author(s):  
Michael R. Oermann ◽  
Heike Ebendorff-Heidepriem ◽  
Yahua Li ◽  
Tze-Cheung Foo ◽  
Tanya M. Monro
Keyword(s):  
Fiber Lasers ◽  
Tellurite Glass ◽  
Tellurite Glasses ◽  
Microstructured Fiber ◽  
Index Matching ◽  
Erbium Doped

Optical fiber amplifiers

2013 ◽  
pp. 281-322 ◽  
Author(s):  
Ajoy Ghatak ◽  
K. Thyagarajan
Keyword(s):  
Optical Fiber ◽  
Fiber Amplifiers ◽  
Optical Fiber Amplifiers

Wide band fiber systems and long transmission applications based on optimum optical fiber amplifiers lengths

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M. A. Eid ◽  
Vishal Sorathiya ◽  
Sunil Lavadiya ◽  
Huda Said Abd El-Hamid ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Power Level ◽  
Wide Band ◽  
Signal Amplitude ◽  
Fiber Amplifier ◽  
Noise Signal ◽  
Fiber Amplifiers ◽  
Fiber System ◽  
Optical Fiber Amplifiers ◽  
Amplitude Level ◽  
Program Version

Abstract Article clarified the optimum fiber amplifiers length for wide band fiber system applications. Optical suppressed carrier transceiver with various fiber amplifier lengths in long haul applications is simulated by using optisystem simulation program version 13. Max. Q coefficient and min. BER can be tested for various fiber amplifiers lengths from 5 to 30 m. The optimum performance efficiency is achieved with 5 m amplifier length which the max. Q coefficient is 62.5 and bits error rate is tended to zero. Peak power amplitude level, noise signal power level, noise signal amplitude level (NSAL) and peak signal amplitude level after channel with a 45 km length for optimum fiber optic amplifier length of 5 m are measured.

Optical Networks Performance Optimization Based on Hybrid Configurations of Optical Fiber Amplifiers and Optical Receivers

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
I. S. Amiri ◽  
Fatma Mohammed Aref Mahmoud Houssien ◽  
Ahmed Nabih Zaki Rashed ◽  
Abd El-Naser A. Mohammed
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Performance Optimization ◽  
Input Power ◽  
Fiber Amplifiers ◽  
Q Factor ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Optical Fiber Amplifiers

AbstractThe 16-channels dense wavelength division multiplexing (DWDM) systems have been optimized by utilizing hybrid configurations of conventional optical fiber amplifiers (EDFA, RAMAN and SOA) and optical photodetectors (PIN, APD(Si) and APD(InGaAs)). The DWDM systems were implemented for 5 Gb/s channel speed using one of these configurations with 100 GHz channel spacing and 25 km amplifying section. The hybrid configurations are the combinations of (PIN + EDFA), (PIN + RAMAN), (PIN + SOA), (APD(Si) + EDFA), (APD(Si) + RAMAN), (APD(Si) + SOA), (APD(InGaAs) + EDFA), (APD(InGaAs) + RAMAN) and (APD(InGaAs) + SOA). Based on BER, Q-factor and eye diagrams, the performance was compared for these configurations under influences of various thermal noise levels of photodetectors over different fiber lengths ranging from 25 km up to 150 km. The results revealed that both APD structures give optimum performance at input power Pin = 5 dBm due to high internal avalanche gain. EDFA outperforms RAMAN and SOA amplifiers. SOA amplifier shows degraded performance because of nonlinearity effects induced. RAMAN amplifier seems to be the best alternative for long reach DWDM systems because it minimizes the effects of fiber nonlinearities. The configuration (APD(Si) + EDFA) is the most efficient and recommended to be used for transmission distance beyond 100 km due to its larger Q-factor.

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