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Characterization of an ASE reflector-based gain-clamped erbium-doped fiber amplifier | IEEE Journals & Magazine | IEEE Xplore

Characterization of an ASE reflector-based gain-clamped erbium-doped fiber amplifier


Abstract:

We develop a simulation tool for an all-optical gain-clamped erbium-doped fiber amplifier (GC-EDFA) based on an amplified spontaneous emission (ASE) reflector and thoroug...Show More

Abstract:

We develop a simulation tool for an all-optical gain-clamped erbium-doped fiber amplifier (GC-EDFA) based on an amplified spontaneous emission (ASE) reflector and thoroughly verify its validity by comparing simulation data with experimental ones. We carry out simulation work as changing conditions like reflection ratio and bandwidth of the ASE reflector, EDF length, and pump power. From this work, we have an exact understanding about the gain clamping principle that a reflected ASE acts like an intensity reservoir against input signal intensity variation. In general, as a reflected ASE power becomes higher, both a dynamic range and a noise figure (NF) increase; on the other hand, a clamped gain value decreases. The ASE reflector-based gain clamping scheme can be used for EDFAs with low NF characteristics at small input signal range in case a reflected ASE power is set at a level much lower than powers required for normal gain clamping function.
Published in: IEEE Photonics Technology Letters ( Volume: 17, Issue: 3, March 2005)
Page(s): 555 - 557
Date of Publication: 31 March 2005

ISSN Information:

Citations are not available for this document.

I. Introduction

Gain clamping is one of key functions required for erbium-doped fiber amplifiers (EDFAs) in wavelength-division-multiplexed (WDM) optical transmission systems and WDM optical networks where dynamic channels adding–dropping or abrupt failure of the other signal channels can occur. Experimental (squares) and simulation (lines) data versus (a) input signal power at 1550 nm and (b) wavelength at −25 dBm. Definition of dynamic range and the GC-EDFA configuration are also shown in (a) and (b), respectively. Optical feedback schemes based on a lasing mechanism are a simple and effective way to achieve constant gain characteristics regardless of input power variations. However, the optical feedback schemes usually have some shortcomings like high noise figure (NF) and transient power excursion in surviving channels due to relaxation oscillation (RO). Various optical and optical–electrical hybrid approaches have been reported to solve such problems [1]–[3]. The approaches, however, must have a limitation to improve the shortcomings since they still use lasing-based gain clamping schemes. Recently, we reported a novel gain-clamping scheme for EDFA by using an amplified spontaneous emission (ASE) reflector composed of a coarse WDM (CWDM) coupler and a fiber mirror [4]. The gain-clamped EDFA (GC-EDFA) has been free from RO phenomena since it comprised no optical cavity. In this letter, we investigate the characteristics of the ASE reflector-based GC-EDFA with respect to operation conditions like reflection ratio, bandwidth, and center wavelength of the ASE mirror by using a theoretical simulation tool.

Cites in Papers - |

Cites in Papers - IEEE (2)

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1.
Yan Chen, Rujian Lin, "A novel EDFA configuration employing dynamic gain tilt controller", 2008 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference, pp.1-3, 2008.
2.
Joon Tae Ahn, Hong-Seok Seo, Woon Jin Chung, Bong Je Park, Kyong Hon Kim, "ASE reflector-based gain-clamped erbium-doped fiber amplifier using an optical interleaver", IEEE Photonics Technology Letters, vol.17, no.8, pp.1632-1634, 2005.

Cites in Papers - Other Publishers (5)

1.
Kenichiro Tsuji, Tomoyuki Uehara, "Gain-clamped erbium-doped fiber amplifier using a Sagnac loop and low-reflectivity fiber Bragg grating", IEICE Electronics Express, vol.16, no.8, pp.20190056, 2019.
2.
Bo-Hun Choi, Sang-Soo Lee, "The Burst Effect Analysis of 2.5 Gb/s TDM-PON Systems Using a SOA Link Extender", Korean Journal of Optics and Photonics, vol.23, no.1, pp.6, 2012.
3.
A. A. A. Bakar, M. A. Mahdi, M. H. Al-Mansoori, S. Shaari, A. K. Zamzuri, "Single-stage gain-clamped L-band EDFA with C-band ASE saturating tone", Laser Physics, vol.19, no.5, pp.1026, 2009.
4.
Tsair-Chun Liang, Shih Hsu, "The L-band EDFA of high clamped gain and low noise figure implemented using fiber Bragg grating and double-pass method", Optics Communications, vol.281, no.5, pp.1134, 2008.
5.
Yanli Jin, Qingying Dou, Yange Liu, Jianguo Liu, Lingling Xu, Shuzhong Yuan, Xiaoyi Dong, "Gain-clamped dual-stage L-band EDFA by using backward C-band ASE", Optics Communications, vol.266, no.2, pp.390, 2006.
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References

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