Title :
Amplified integrated star couplers with zero loss
Author :
Presby, Herman M. ; Giles, C. Randy
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
It is shown that it is possible to compensate for the approximately 17 dB splitting and excess loss of a 19*19 integrated star coupler with erbium-doped fibers (EDFs) connected to the output channels. The amplifier fibers are pumped to near-quantum-limited noise performance using only one laser source at 0.98 mu m, which is connected to one of the input ports and is distributed to the EDFs through the star itself. The integrated star coupler´s near-wavelength-independent performance is able to transmit both the pump light at 0.98 mu m and the signal at 1.55 mu m with a loss differential on the order of only 1 dB.<>
Keywords :
erbium; fibre lasers; integrated optics; optical couplers; optical losses; 0.98 micron; 1 dB; 1.55 micron; 17 dB splitting; Er doped fibres; amplified integrated star coupler; excess loss; laser source; loss differential; near-quantum-limited noise performance; output channels; zero loss; Distributed amplifiers; Erbium-doped fiber lasers; Laser excitation; Laser noise; Optical coupling; Optical fiber amplifiers; Optical fiber couplers; Optical waveguides; Pump lasers; Silicon;
Journal_Title :
Photonics Technology Letters, IEEE
