Title :
Fiber amplifiers for coherent space communication
Author :
Rochat, Etienne ; Dändliker, René ; Haroud, Karim ; Czichy, Reinhard H. ; Roth, Ulrich ; Costantini, D. ; Holzner, Reto
Author_Institution :
Dept. of Optoelectron. & Instrum., ABB Corporate Res., Baden Dattwil, Switzerland
Abstract :
We report on the application of double-clad doped fiber amplifiers for coherent space communication systems using a master oscillator power amplifier (MOPA) design at 1.06 μm. The master oscillator is either a single-frequency Nd:YAG solid-state laser or a distributed-feedback fiber laser. The power amplifier is a diode-laser-pumped double-clad Nd doped fiber with polarization control, 20 dB gain, and about 1.3 W output power. A dual stage configuration using a solid-state Nd:YAG amplifier as second stage is presented as well, increasing the output power to 3.5 W with 28 dB gain. We also report on the possibility to integrate a single-frequency fiber laser, an all-fiber phase modulator, and a fiber amplifier to build an all-fiber phase-modulated MOPA. Up to 1 W continuous-wave output phase-modulated with a bandwidth of 196 MHz has been achieved
Keywords :
integrated optics; laser beams; laser modes; laser noise; neodymium; optical fibre amplifiers; optical fibre cladding; optical links; optical modulation; optical pumping; phase modulation; power amplifiers; space communication links; 1 W; 1.06 mum; 1.3 W; 196 MHz; 20 dB; 28 dB; 3.5 W; YAG:Nd; YAl5O12:Nd; all-fiber phase modulator; all-fiber phase-modulated MOPA; bandwidth; coherent space communication; coherent space communication systems; continuous-wave phase-modulated output; diode-laser-pumped double-clad Nd doped fiber; distributed-feedback fiber laser; double-clad doped fiber amplifiers; dual stage configuration; fiber amplifier; fiber amplifiers; gain; master oscillator; master oscillator power amplifier design; output power; polarization control; power amplifier; single-frequency Nd:YAG solid-state laser; single-frequency fiber laser; solid-state Nd:YAG amplifier; Diodes; Doped fiber amplifiers; Fiber lasers; Gain; Optical fiber communication; Optical fiber polarization; Oscillators; Power amplifiers; Power generation; Solid lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.924012
