Title :
Filterless "Add" multiplexer based on novel complex gratings assisted coupler
Author :
Greenberg, Maxim ; Orenstein, Meir
Author_Institution :
Electr. Eng. Dept., Technion-Israel Technol. Inst., Haifa, Israel
fDate :
7/1/2005 12:00:00 AM
Abstract :
A nonfilter-based "add" multiplexer for wavelength-division-multiplexed communications, operating without interception of through traffic channels is designed by employing a novel unidirectional grating assisted coupler. Realized by a matched periodic modulation of the refractive index and loss (gain), it enables the break down of optical reciprocity and, thus, allows wavelength-independent one-way light power transmission. A single "add" device can serve for uploading any wavelength to the through stream.
Keywords :
diffraction gratings; multiplexing equipment; optical communication equipment; optical couplers; optical losses; optical modulation; refractive index; telecommunication channels; telecommunication traffic; wavelength division multiplexing; add multiplexer; complex grating assisted coupler; filterless multiplexer; matched periodic modulation; one-way light power transmission; optical gain; optical loss; optical reciprocity breakdown; refractive index; traffic channels; unidirectional grating assisted coupler; wavelength-division-multiplexed communications; wavelength-independent transmission; Couplings; Gratings; Multiplexing; Optical filters; Optical losses; Optical modulation; Optical refraction; Optical variables control; Propagation losses; Refractive index; Gratings; optical amplifiers; optical couplers; optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.848560
