Title :
Narrow-linewidth discrete-mode laser diodes for coherent communication applications
Author :
O´Carroll, John ; Phelan, Richard ; Kelly, Brian ; Huynh, Tam N. ; Cardiff, Barry ; Smyth, Frank ; Anandarajah, Prince M. ; Barry, Liam P.
Author_Institution :
Eblana Photonics Ltd., Dublin, Ireland
Abstract :
Lasers with narrow-linewidth emission are a key component for higher-order modulation formats. We report on discrete-mode laser diodes designed for narrow-linewidth emission and demonstrate linewidths less than 80 kHz. Using these devices in quadrature phase shift keying and 16-quadrature amplitude modulation transmission setups, similar performance to that of an external cavity laser is demonstrated.
Keywords :
optical communication; optical modulation; quadrature amplitude modulation; quadrature phase shift keying; semiconductor lasers; 16-quadrature amplitude modulation transmission; coherent communication application; external cavity laser; higher-order modulation format; narrow-linewidth discrete-mode laser diode; narrow-linewidth emission; quadrature phase shift keying; Measurement by laser beam; Phase shift keying; Power measurement; Receivers; Semiconductor lasers; Temperature measurement; Advanced modulation formats; Coherent communications; Narrow-linewidth lasers; Quadrature amplitude modulation; Quadrature phase shift keying;
Journal_Title :
Optical Communications and Networking, IEEE/OSA Journal of
DOI :
10.1364/JOCN.4.000A90
