"

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.

Bidirectional S –band continuous wave operation in a depressed-cladding erbium doped fiber amplifier

H. AHMAD1,* , M. Z. ZULKIFLI1, A. A.LATIF1, K. THAMBIRATNAM1, S. W. HARUN2

Affiliation

  1. Photonics Laboratory, Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
  2. Department of Electrical Engineering, Faculty of Engineering, University of Malaya 50603 Kuala Lumpur, Malaysia

Abstract

In this paper we propose and characterize a bi-directional Depressed-Cladding Erbium Doped Fibre Amplifier (DC-EDFA) for Continuous Wave (CW) S-band operation. The system uses a Depressed-Cladding Erbium Doped Fibre (DC-EDF) as the gain medium and 3-port OCs to facilitate bi-directional transmission. The performances of gain and noise figure are first studied for the conventional DC-EDFA setup and are obtained at 20 dB and 4 dB respectively. Subsequently, the bidirectional DC-EDFA is tested and is found to have a similar gain 20 dB but with a slightly higher noise figure of 8.5 dB. The highest gain of 19 dB is obtained for the low input signals of -30 and -20 dBm, while higher input signals of -10 and 0 dB show lower gains due to the on-set of saturation effect in the gain medium. A high noise figure of between 8 and 9 dB is also seen, and increases to 19 dB nearing the cut-off wavelength. The bi-directional EDFA shows no loss in the gain but does show an increase in the noise figure as compared to uni-directional S-band DC-EDFAs..

Keywords

Erbium doped fiber amplifier, S-band amplification.

Submitted at: May 9, 2009
Accepted at: May 28, 2009

Citation

H. AHMAD, M. Z. ZULKIFLI, A. A.LATIF, K. THAMBIRATNAM, S. W. HARUN, Bidirectional S –band continuous wave operation in a depressed-cladding erbium doped fiber amplifier, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 5, pp. 547-553 (2009)