Share Email Print

Proceedings Paper

Time-dependent characteristic of negative feedback optical amplifier at bit rates 10-Gbit/s based on an optical triode
Author(s): Yuki Harada; Mohamad Syafiq Azmi; Siti Aisyah Azizan; Takaomi Matsutani; Yoshinobu Maeda
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We proposed and demonstrated an all-optical triode based on a tandem wavelength converter using cross-gain modulation (XGM) in semiconductor optical amplifiers (SOAs). Negative feedback optical amplification scheme, which has the key advantages of reducing bit error rate and waveform reshaping at the output, was employed in this optical triode. This scheme utilizes an input signal and a negative feedback signal (a signal with reverse intensity to the input) and they were fed together into the optical amplifier. Manipulating the intensity of negative feedback signal enabled the noise suppression effect to be optimized and the outputs recorded improvements in bit error rate (BER) and also undergone waveform reshaping shown by the eye-pattern. In negative feedback optical amplifier, the negative feedback signal and input signal were fed into the SOA. However, due to XGM mechanism, there is a setback in which both signals could not be simultaneously fed. Therefore, by using an optical delay, negative feedback timing was manipulated and we investigate timing characteristics of negative feedback optical amplifier with BER and eye-pattern waveforms at 10 Gb/s.

Paper Details

Date Published: 6 January 2015
PDF: 8 pages
Proc. SPIE 9450, Photonics, Devices, and Systems VI, 94501J (6 January 2015); doi: 10.1117/12.2070308
Show Author Affiliations
Yuki Harada, Kinki Univ. (Japan)
Mohamad Syafiq Azmi, Kinki Univ. (Japan)
Siti Aisyah Azizan, Kinki Univ. (Japan)
Takaomi Matsutani, Kinki Univ. (Japan)
Yoshinobu Maeda, Kinki Univ. (Japan)

Published in SPIE Proceedings Vol. 9450:
Photonics, Devices, and Systems VI
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

© SPIE. Terms of Use
Back to Top