Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Gain and noise figure optimization of a macrobending EDFA/Er3+ -Yb3+ Co-doped hybrid optical amplifier



  1. Faculty of Science, Physics Department, Alexandria University, Mohram Bey 21511, Alexandria, Egypt
  2. Faculty of Science, Physics Department, Al Jouf University, Al Jouf, Saudi Arabia
  3. College of Engineering and Technology, Electronics and Communications Engineering Department, Arab Academy for Science, Technology and Maritime Transport Alexandria, Egypt, Member of OSA


In this paper, the gain and noise figure are experimentally studied and investigated for a hybrid amplifier system (HAS) containing a macrobent EDFA as a pre-amplifier in cascade with Er/Yb co-doped amplifier (EYCDFA) as a post-amplifier. The hybrid system is performed under a dual forward pump configuration at 980 nm. The EDFA bending radius is chosen as 4 mm. The affecting parameters to be optimized are the EDFA and EYCDFA pump powers, input signal power, signal wavelength, EDFA and EYCDFA lengths. The macrobent HAS performance is compared with normal HAS with a straight EDFA (without bending) and the other experimental data of recent works showing an improvement in both gain and noise figure. The gain of bent HAS is increased to 68.67 dB and the noise figure is decreased to 4.6 dB, where the corresponding values of the normal HAS are respectively, 64.3 dB and 4.78 dB, at optimized parameters of 15 m EDFA length, 1 m EYCDF length, 500 mW EDFA pump, 100 mW EYCDFA pump and - 40 dBm input signal power at 1530 nm..


Macrobending- EDFA- Hybrid optical amplifier – EYCDA.

Submitted at: Feb. 24, 2016
Accepted at: April 5, 2016


O. MAHRAN, H. MOUSTAFA ALY, Gain and noise figure optimization of a macrobending EDFA/Er3+ -Yb3+ Co-doped hybrid optical amplifier, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 3-4, pp. 193-200 (2016)