Gain flattened and C/L band amplified spontaneous emission noise re-injected L-band EDFA

Bharat Naresh Bansal; Navjot Singh

doi:10.1515/joc-2021-0192

Article

Gain flattened and C/L band amplified spontaneous emission noise re-injected L-band EDFA

Bharat Naresh Bansal and Navjot Singh

Published/Copyright: November 18, 2021

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From the journal Journal of Optical Communications Volume 45 Issue 2

Abstract

Explosive increase in internet services put peer pressure on conventional band grid (1530–1570 nm) and therefore L-band wide wavelength grid is required to cater the ever-increasing demands. In this work, accentuation is given to enhance the gain flattening of ultradense (25 GHz) L-band WDM system using single stage EDFA amplifier when ultralow power is launched from 16 and 32 channels. High gain and gain flattening is achieved by incorporating three fiber Bragg gratings (FBGs) for amplified spontaneous noise reinjection. Maximum Amplified spontaneous emission (ASE) is emerged at 1565 nm for the 1575.69–1579 nm input wavelengths (16 channels) and 1572.58–1579 nm (32 channels) at −55 dBm ultra low carrier powers. To optimize different parameters of L-band EDFA, different physical parameters such as core radius, EDF link lengths, and launched powers are varied, and results are analyzed in terms of lateness. Maximum gain is found out to be 34.12 dB at optimal physical parameters of the EDF with gain flatness of ±0.45 dB in case of 16 channels and ±1.41 in case of 32 channels.

Keywords: ASE; Fiber Bragg Grating (FBG); gain; long band erbium-doped fiber amplifier (L-band EDFA); pump conversion efficiency (PCE)

Corresponding author: Navjot Singh, ECE Department, MIMIT, Malout, Punjab, India, E-mail: navjotmimit@gmail.com

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-08-18

Accepted: 2021-09-27

Published Online: 2021-11-18

Published in Print: 2024-04-25

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https://doi.org/10.1515/joc-2021-0192

Keywords for this article

ASE; Fiber Bragg Grating (FBG); gain; long band erbium-doped fiber amplifier (L-band EDFA); pump conversion efficiency (PCE)