scholarly journals Phase-Separated Alumina–Silica Glass-Based Erbium-Doped Fibers for Optical Amplifier: Material and Optical Characterization along with Amplification Properties

Fibers ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 67 ◽  
Author(s):  
Mukul Paul ◽  
Alexander Kir’yanov ◽  
Yuri Barmenkov ◽  
Mrinmay Pal ◽  
Randall Youngman ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Silica Glass ◽  
Chemical Vapor ◽  
Optical Characterization ◽  
Optical Amplifier ◽  
Inhomogeneous Broadening ◽  
Coordination Numbers ◽  
Erbium Doped ◽  
Doped Fibers ◽  
Solution Doping

In this paper, we present phase-separated alumina–silica glass-based Er3+-doped optical fibers made by a modified chemical vapor deposition (MCVD) process in combination with a solution doping (SD) technique. The fibers exhibited better optical performance than other silica-based host glasses—both in terms of spectral broadening and flattening of the gain spectra in the C band (1530–1560 nm) region—as well as an improved lifetime. These phase-separated erbium-doped fibers (EDF) promoted longer Er–O bond lengths and also hexa- and penta-coordinated Al3+ ions instead of the fourfold coordination found in non-phase-separated EDF. It was observed that the higher coordination numbers of Er3+ and Al3+ ions in phase-separated glass hosts led to more homogeneous and inhomogeneous broadening, resulting in better flatness of the gain spectrum with 1.2 dB more gain compared to the non-phase-separated EDF.

scholarly journals On the Enlargement of the Emission Spectra from the 4I13/2 Level of Er3+ in Silica-Based Optical Fibers through Lanthanum or Magnesium Co-Doping

Ceramics ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 364-374 ◽  
Author(s):  
Manuel Vermillac ◽  
Jean-François Lupi ◽  
Stanislaw Trzesien ◽  
Michele Ude ◽  
Wilfried Blanc
Keyword(s):  
Optical Fiber ◽  
Spontaneous Emission ◽  
Optical Fibers ◽  
Emission Spectra ◽  
Magnesium Doping ◽  
Co Doping ◽  
Erbium Doped ◽  
Optical Fiber Amplifiers ◽  
Linewidth Broadening ◽  
Solution Doping

Improving optical fiber amplifiers requires the elaboration and use of new materials and new compositions. In this sense, we prepared erbium-doped optical fiber samples that were co-doped with magnesium or lanthanum by gradual-time solution doping. Doping concentrations and thermal processes induce the formation of nanoparticles. The effect of lanthanum and magnesium contents on the width of the spontaneous emission of the 4 I 13 / 2 level of Er 3 + was characterized in the nanoparticle-rich fiber samples. For that purpose, the width was characterized by the effective linewidth and the full-width at half-maximum (FWHM). The results indicate the robustness of the effective linewidth to strong variations in the intensity profiles of the 4 I 13 / 2 spontaneous emission. Increasing the doping concentrations of both magnesium and lanthanum increases the FWHM and the effective linewidth, along with optical losses. Results show that the fabrication of nanoparticle-rich optical fibers through lanthanum or magnesium doping induces an FHWM broadening of 54% and 64%, respectively, or an effective linewidth broadening of 59% (for both elements) while maintaining a transparency that is compatible with fiber laser and amplifier applications.

Investigation of Optical Properties in Sn, Sb, Pb and Bi Doped Silica Glasses Aiming Visible Fiber Laser

2016 ◽  
Vol 702 ◽  
pp. 91-95
Author(s):  
Edson Haruhico Sekiya ◽  
Kazuya Saito
Keyword(s):  
Silica Glass ◽  
Emission Spectra ◽  
Chemical Vapor ◽  
Visible Range ◽  
Strong Emission ◽  
Silica Glasses ◽  
Valence States ◽  
Doping Technique ◽  
Co Doped ◽  
Solution Doping

Emission spectra of Sn, Sb, Pb and Bi doped silica glasses co-doped with Al and P prepared by modified chemical vapor-phase deposition (MCVD) using solution doping technique are presented. Bi doped silica glasses present emission/excitation (Em/Ex) bands around 470/(330, 220nm) 600/(470, 350, 270nm), 730 and 830/(820, 420, 380, 250nm), with the intensity ratio of these bands depends on the composition, indicating that different emission sources (valence states or defects) are present together. The Em/Ex of Sb doped silica glasses also depend on composition, and are similar of Bi doped silica glasses. The lifetime at 830 and 1400 in Bi or Sb doped silica glasses are similar and around 60 and 850μs, respectively. The lifetime around 600nm was 3.2 and 11μs, respectively to Bi and Sb doped silica glasses. The Sn doped silica glass present Em/Ex bands around 305/265nm, 400/(270, 340nm) and 430/280nm. The Pb doped silica glass present Em/Ex around 370/290nm and 540/320nm. No significant change in the emission bands in the visible range are observed when the Sn or Pb doped silica glass are co-doped with Al or P. The present results of Em/Ex suggest that Bi and Sb can be candidate for fiber lasing in visible range (around 600nm) using the available LD pumping (ex: 405nm). Despite Sn and Pb doping shows strong emission around 400nm, unfortunately until now there is no LD that can be used as pumping source.

scholarly journals Development of Bismuth-Doped Fibers (BDFs) in Optical Communication Systems

2020 ◽  
Author(s):  
Rifat M. Dakhil Alsingery ◽  
Ahmed Mudhafer
Keyword(s):  
Optical Fibers ◽  
Optical Communication ◽  
Communication Systems ◽  
Spectral Characteristics ◽  
Fiber Amplifier ◽  
Background Information ◽  
Active Centers ◽  
Erbium Doped ◽  
Optical Communication Systems ◽  
Doped Fibers

This chapter will provide background information in the development of BDFs and their applications in optical communication systems. Herein, the main focus is briefly described previous studies on BDFs that have attracted much interest over the last two decades. This necessary information and concepts are very much relevant to understanding this book, mainly due to the doping of Bi in the studied bismuth and erbium-doped silicate fibers (BEDFs). The remaining chapter is consisting of the following sections: Sec.2: General introduction about optical fibers. Sec. 3 discusses the general spectral characteristics of BDFs. Sec.4: Including the active centers (namely the bismuth (Bi) active centers (BACs)) responsible for the spectral properties in Bi-doped fibers. Sec.4 Discusses the Bismuth Doped Fiber Amplifier (BDFA).

Germania-glass-core silica-glass-cladding modified chemical-vapor deposition optical fibers: optical losses, photorefractivity, and Raman amplification

2004 ◽  
Vol 29 (22) ◽  
pp. 2596 ◽  
Author(s):  
V. M. Mashinsky ◽  
V. B. Neustruev ◽  
V. V. Dvoyrin ◽  
S. A. Vasiliev ◽  
O. I. Medvedkov ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Optical Fibers ◽  
Vapor Deposition ◽  
Silica Glass ◽  
Chemical Vapor ◽  
Raman Amplification ◽  
Optical Losses

Observation of energy-distribution-dependent homogeneous upconversion in erbium-doped silica glass fibres

1999 ◽  
Vol 35 (14) ◽  
pp. 1189 ◽  
Author(s):  
D. Bremberg ◽  
S. Helmfrid ◽  
B. Jaskorzynska ◽  
M. Swillo ◽  
J.L. Philipsen ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Silica Glass ◽  
Glass Fibres ◽  
Erbium Doped

scholarly journals Design and analysis of a fiber-optic sensing system for shape reconstruction of a minimally invasive surgical needle

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Aizhan Issatayeva ◽  
Aida Amantayeva ◽  
Wilfried Blanc ◽  
Daniele Tosi ◽  
Carlo Molardi
Keyword(s):  
Performance Analysis ◽  
Minimally Invasive ◽  
Optical Fibers ◽  
Single Mode ◽  
Spectral Shift ◽  
Shape Reconstruction ◽  
Minimally Invasive Surgical ◽  
Working Principle ◽  
Doped Fibers ◽  
Distributed Measurement

AbstractThis paper presents the performance analysis of the system for real-time reconstruction of the shape of the rigid medical needle used for minimally invasive surgeries. The system is based on four optical fibers glued along the needle at 90 degrees from each other to measure distributed strain along the needle from four different sides. The distributed measurement is achieved by the interrogator which detects the light scattered from each section of the fiber connected to it and calculates the strain exposed to the fiber from the spectral shift of that backscattered light. This working principle has a limitation of discriminating only a single fiber because of the overlap of backscattering light from several fibers. In order to use four sensing fibers, the Scattering-Level Multiplexing (SLMux) methodology is applied. SLMux is based on fibers with different scattering levels: standard single-mode fibers (SMF) and MgO-nanoparticles doped fibers with a 35–40 dB higher scattering power. Doped fibers are used as sensing fibers and SMFs are used to spatially separate one sensing fiber from another by selecting appropriate lengths of SMFs. The system with four fibers allows obtaining two pairs of opposite fibers used to reconstruct the needle shape along two perpendicular axes. The performance analysis is conducted by moving the needle tip from 0 to 1 cm by 0.1 cm to four main directions (corresponding to the locations of fibers) and to four intermediate directions (between neighboring fibers). The system accuracy for small bending (0.1–0.5 cm) is 90$$\%$$ % and for large bending (0.6–1 cm) is approximately 92$$\%$$ % .

scholarly journals Single Longitudinal Mode Lasers by Using Artificially Controlled Backscattering Erbium Doped Fibers

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 27428-27433
Author(s):  
Rosa Ana Perez-Herrera ◽  
Pablo Roldan-Varona ◽  
Luis Rodriguez Cobo ◽  
Jose Miguel Lopez-Higuera ◽  
Manuel Lopez-Amo
Keyword(s):  
Longitudinal Mode ◽  
Single Longitudinal Mode ◽  
Erbium Doped ◽  
Doped Fibers

Investigations of Different Amplifiers in 16 × 40 Gb/S WDM System

2019 ◽  
Vol 40 (4) ◽  
pp. 341-346
Author(s):  
Kulwinder Singh ◽  
Karan Goel ◽  
Kamaljit Singh Bhatia ◽  
Hardeep Singh Ryait
Keyword(s):  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Fiber Amplifiers ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Erbium Doped ◽  
Eye Opening ◽  
Eye Closure

Abstract Different fiber amplifiers such as semiconductor optical amplifier, erbium-doped fiber amplifier and erbium ytterbium-co-doped fiber amplifier (EYCDFA) are investigated for 16×40 GB/s wavelength division multiplexing system. Various performance parameters including Q-factor, bit error rate, jitter, eye opening and eye closure are observed and analyzed. It is reported that EYCDFA is a better choice among the tested amplifiers. The proposed system is also investigated in terms of transmission distance.

Influence of Si-Al-Ge-Sb Matricies on Tm3+ Excitation Levels

2008 ◽  
Vol 587-588 ◽  
pp. 293-297
Author(s):  
M. Pospíšilová ◽  
P. Adámek ◽  
P. Peterka ◽  
V. Kubeček ◽  
I. Kašík ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Fluorescence Spectra ◽  
Chemical Vapor ◽  
Oscillator Strengths ◽  
Absorption And Fluorescence Spectra ◽  
Measured Absorption ◽  
Optical Fiber Drawing ◽  
Solution Doping

Absorption and fluorescence spectra in the range from 350 to 1750 nm of several Tm3+- doped optical performs (rods) for optical fiber drawing were measured. Silica-based matrices of Al2O3-GeO2-P2O5-Sb2O3-SiO2 composition doped with several thousands ppm of Tm3+ were characterized. The preforms were fabricated by the Modified Chemical Vapor Deposition and by the solution doping methods. A new method, Genetic Algorithm SPEctra Decomposition was adopted for processing of the measured absorption spectra. This decomposition made it possible to calculate the oscillator strengths of Tm3+ absorption levels. Fluorescence bands of Tm3+ at 800 nm or 1640 nm were found in fluorescence spectra measured on the preform samples when excited at 1064 nm only.

Sign in / Sign up

Export Citation Format

Share Document