We present a novel scheme of overcoming laser diode (LD) intensity modulation bandwidth limitation by effectively improving modulation depth and simultaneously generating optical single sideband for radio-on-fiber applications. Our scheme uses wavelength-selective amplification characteristic of an LD under modulated light injection. The 17-GHz optical single sideband signals are generated with a 2.5-Gb/s-grade distributed feedback laser with wavelength-selective gain from a Fabry-Pérot LD. The 155-Mb/s data transmission at 17 GHz is successfully achieved.
Bibliographical noteFunding Information:
Manuscript received December 2, 2003; revised April 7, 2004. This work was supported by the Ministry of Science and Technology of Korea through the National Research Laboratory Program. The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org; email@example.com; firstname.lastname@example.org). Digital Object Identifier 10.1109/LPT.2004.829767 Fig. 1. Configuration for our scheme and schematic optical spectra for RF modulated LD1 and after passing through LD2. is the wavelength of free-running (without any injection) LD2.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering