Share Email Print
cover

Proceedings Paper

Four-wave mixing of strongly injection-locked semiconductor lasers for all-optical frequency conversion
Author(s): Sheng-Kwang Hwang; Shin-Hung Tsai
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

Frequency conversion is considered as a key functionality for wavelength division multiplexing systems, which converts an incoming optical carrier of one frequency to an outgoing optical carrier of another frequency while preserving the quality of carried data. The all-optical approach is promising for such a purpose because not only the system complexity and power consumption of frequency converters are greatly reduced but also the flexibility and reconfigurability are highly improved. Four-wave mixing of solitary semiconductor lasers has been proposed to achieve all-optical frequency conversion. Although the conversion efficiency is relatively high, however, the conversion bandwidth is small, limiting the conversion range, and the efficiency flatness is poor, distorting the data signal. In this study, we propose to use four-wave mixing of injection-locked semiconductor lasers instead. When a semiconductor laser is subject to a strong optical injection, it can enter into stable locking dynamics before undergoing Hopf bifurcation. An incoming optical carrier of one frequency perturbs the injection-locked laser, generating an outgoing optical carrier of another frequency through four-wave mixing. Tens to hundreds of gigahertz of frequency conversion can be achieved, increasing the conversion bandwidth by 3 folds. The conversion efficiency varies within 5 dB over the enhanced bandwidth, improving the efficiency flatness by at least 10 dB. Greatly improved eye-diagrams and bit-error ratios are thus obtained. The input power dynamic range of the incoming optical carrier is greatly enhanced, increasing the flexibility of the proposed system.

Paper Details

Date Published: 17 August 2010
PDF: 8 pages
Proc. SPIE 7781, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV, 778109 (17 August 2010); doi: 10.1117/12.860654
Show Author Affiliations
Sheng-Kwang Hwang, National Cheng Kung Univ. (Taiwan)
Shin-Hung Tsai, National Chung Cheng Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7781:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV
Shizhuo Yin; Ruyan Guo, Editor(s)

© SPIE. Terms of Use
Back to Top