Development of bi-doped fibre amplifiers and lasers & broadband Er-doped multi-element fibre amplifiers
Development of bi-doped fibre amplifiers and lasers & broadband Er-doped multi-element fibre amplifiers
The demand for fibre optic communication is continuously increasing over the years. This is due to the increased accessibility to the World Wide Web using internet of things. The capacity of current fibre optic communication through the single mode fibre is limited by the amplification bandwidth of Er-doped fibres. To increase the capacity of fibre optic communication research community around the world are proposing different approaches. One of them is to use the low loss window (1260-1625nm) of silica optical fibres by developing efficient fibre amplifiers and lasers. Another one is to use novel fibres such as multi-core fibres, multi-mode fibres and multi-element fibres (MEFs) for space division multiplexing in the C-band (1525-1565nm).
In this thesis, we developed amplifiers and lasers within the wavelength band from 1150-1625nm using Bi-doped and multi-element Er-doped fibres. Here, we investigated the fabrication of Bi-doped optical fibres in different glass hosts (aluminosilicate and phosphosilicate) using MCVD-solution doping technique. Bi-doped aluminosilicate fibres are used to develop an amplifier with 12dB gain at 1180nm. Bi-doped phosphosilicate fibres are used to develop amplifiers and lasers in the second telecommunication band from 1300-1360nm. An all-fibre Bi-doped phosphosilicate amplifier with a 25dB at gain in a 40nm bandwidth from 1320-1360nm is reported. Also, a Bi-doped fibre laser operating at 1360nm with an output power of 110mW, and a picosecond pulsed mode-locked fibre laser operating at 1340nm with a peak power of 1.15W, are demonstrated. These amplifiers and lasers have important applications in medicine, astronomy and optical fibre communication. In addition, we also discussed the novel fibres known as MEFs and developed core and cladding pumped broadband amplifiers covering 1500-1620nm using multi-element Er and Er/Yb-doped fires, respectively.
University of Southampton
Thipparapu, Naresh Kumar
a36a2b4c-b75c-4976-a753-b5fab9e54150
March 2018
Thipparapu, Naresh Kumar
a36a2b4c-b75c-4976-a753-b5fab9e54150
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
May-Smith, Timothy C
47952bbd-ce28-4507-a723-b4d80bf0f809
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Umnikov, Andrey A
9b57cc1b-d0f9-4c34-9409-a58ee0f70250
Taranta, Austin
bc2e834f-0d85-44a1-a874-8150df1f73d9
Alam, Shaif-Ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Standish, Robert
ce563e93-d448-47d3-90d9-bf4dd62af9f6
Nunez Velazquez, Martin
3c102956-ac51-4d02-9fe6-6628557cfbff
Jain, Saurabh
bf4af598-26bf-47f4-a0a4-800095a23eb5
Jain, Deepak
787e5045-8862-46ba-b15e-82c2fe60495f
Thipparapu, Naresh Kumar
(2018)
Development of bi-doped fibre amplifiers and lasers & broadband Er-doped multi-element fibre amplifiers.
University of Southampton, Doctoral Thesis, 140pp.
Record type:
Thesis
(Doctoral)
Abstract
The demand for fibre optic communication is continuously increasing over the years. This is due to the increased accessibility to the World Wide Web using internet of things. The capacity of current fibre optic communication through the single mode fibre is limited by the amplification bandwidth of Er-doped fibres. To increase the capacity of fibre optic communication research community around the world are proposing different approaches. One of them is to use the low loss window (1260-1625nm) of silica optical fibres by developing efficient fibre amplifiers and lasers. Another one is to use novel fibres such as multi-core fibres, multi-mode fibres and multi-element fibres (MEFs) for space division multiplexing in the C-band (1525-1565nm).
In this thesis, we developed amplifiers and lasers within the wavelength band from 1150-1625nm using Bi-doped and multi-element Er-doped fibres. Here, we investigated the fabrication of Bi-doped optical fibres in different glass hosts (aluminosilicate and phosphosilicate) using MCVD-solution doping technique. Bi-doped aluminosilicate fibres are used to develop an amplifier with 12dB gain at 1180nm. Bi-doped phosphosilicate fibres are used to develop amplifiers and lasers in the second telecommunication band from 1300-1360nm. An all-fibre Bi-doped phosphosilicate amplifier with a 25dB at gain in a 40nm bandwidth from 1320-1360nm is reported. Also, a Bi-doped fibre laser operating at 1360nm with an output power of 110mW, and a picosecond pulsed mode-locked fibre laser operating at 1340nm with a peak power of 1.15W, are demonstrated. These amplifiers and lasers have important applications in medicine, astronomy and optical fibre communication. In addition, we also discussed the novel fibres known as MEFs and developed core and cladding pumped broadband amplifiers covering 1500-1620nm using multi-element Er and Er/Yb-doped fires, respectively.
Text
Final Thesis
- Version of Record
More information
Published date: March 2018
Identifiers
Local EPrints ID: 423478
URI: http://eprints.soton.ac.uk/id/eprint/423478
PURE UUID: d16ea708-1dee-4ed3-a958-c4c65a970ebf
Catalogue record
Date deposited: 24 Sep 2018 16:30
Last modified: 16 Mar 2024 04:24
Export record
Contributors
Author:
Naresh Kumar Thipparapu
Thesis advisor:
Jayanta Sahu
Thesis advisor:
Timothy C May-Smith
Thesis advisor:
Pranabesh Barua
Thesis advisor:
Andrey A Umnikov
Thesis advisor:
Austin Taranta
Thesis advisor:
Shaif-Ul Alam
Thesis advisor:
Robert Standish
Thesis advisor:
Martin Nunez Velazquez
Thesis advisor:
Saurabh Jain
Thesis advisor:
Deepak Jain
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics