DocumentCode :
1361498
Title :
High-Power, Low RIN 1.55- 
Directly Modulated DFB Lasers for Analog Signal Transmission
Author :
Faugeron, Mickaël ; Tran, Michaël ; Lelarge, Francois ; Chtioui, Mourad ; Robert, Yannick ; Vinet, Eric ; Enard, Alain ; Jacquet, Joël ; Van Dijk, Frederic
Author_Institution :
Thales Air Syst., Limours, France
Volume :
24
Issue :
2
fYear :
2012
Firstpage :
116
Lastpage :
118
Abstract :
We report the demonstration of high-power and low relative intensity noise (RIN) directly modulated distributed feedback lasers at 1.55 μm. We have developed a structure with asymmetrical cladding to reduce internal losses due to the p-doped upper cladding. We obtain an output power of 140 mW at 550 mA and an RIN below -157 dB/Hz in the 0.1-20 GHz range along with a high side-mode suppression ratio (>;55 dB). The modulation bandwidth was larger than 7 GHz. The characteristics of these lasers, namely a high electrical to optical conversion efficiency (0.340 W/A at 350 mA), low noise, high power (98 mW at 350 mA), and linearity, make them the perfect candidates for high gain, high dynamic directly modulated analog links.
Keywords :
cladding techniques; distributed feedback lasers; laser noise; optical losses; optical modulation; analog signal transmission; asymmetrical cladding; current 550 mA; directly modulated DFB lasers; distributed feedback lasers; frequency 0.1 GHz to 20 GHz; high side-mode suppression ratio; high-power lasers; internal losses; low RIN lasers; p-doped upper cladding; power 140 mW; relative intensity noise; wavelength 1.55 mum; Distributed feedback devices; Masers; Modulation; Optical fibers; Power lasers; Semiconductor lasers; 15-$mu{rm m}$
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2011.2173479
Filename :
6060854
Link To Document :
