Topic
Wavelength-division multiplexing
About: Wavelength-division multiplexing is a research topic. Over the lifetime, 25059 publications have been published within this topic receiving 332027 citations. The topic is also known as: WDM.
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01 Dec 1993
TL;DR: In this article, the authors describe the manufacturing of active fibers properties of rare earth ions in glass host materials characterization measurements for rare earth-doped fibers and the optimization of fiber pump wavelength choice for 1550-nm amplifiers.
Abstract: Manufacturing of active fibers properties of rare-earth ions in glass host materials characterization measurements for rare-earth-doped fibers basics of 1550-nm fiber amplifiers optimization of er-doped fiber pump wavelength choice for 1550-nm amplifiers improved 1550-nm amplifiers in advanced configurations the 1300-nm amplifiers in advanced configurations the 1300-nm fiber amplifier fiber amplifiers in digital direct detection systems distributed fiber amplifiers amplifiers for AM-modulated systems
135 citations
TL;DR: In this paper, the authors describe polarization independent wavelength conversion, utilizing fiber four-wave mixing, by using two orthogonal pump lights having different frequencies, the baseband signal of the wavelength converted light is insensitive to the polarization state of the original signal light.
Abstract: This paper describes polarization independent wavelength conversion, utilizing fiber four-wave mixing. By using two orthogonal pump lights having different frequencies, the baseband signal of the wavelength converted light is insensitive to the polarization state of the original signal light. Experiments that include bit error measurements confirm the polarization independent operation. >
134 citations
TL;DR: In this article, an optical add/drop multiplexer that enables full access to 16 individual wavelength channels has been fabricated on the planar lightwave circuit (PLC), which consists of four arrayed-waveguide gratings which are connected through 16 double-gate thermo-optic switches.
Abstract: An optical add/drop multiplexer that enables full access to 16 individual wavelength channels has been fabricated on the planar lightwave circuit (PLC). The device consists of four arrayed-waveguide gratings which are connected through 16 double-gate thermo-optic switches. The crosstalk characteristics of the optical switches have been improved by adopting a double-gate configuration. The on-off crosstalks from main input or add port to main output or drop port are less than -28.4 dB and the on-chip insertion losses are 7.8-10.3 dB, respectively.
134 citations
TL;DR: In the encoding process, conventional algorithm employed for the generation of collinearly superimposed OVs is combined with a genetic algorithm to achieve high-volume OV multiplexing to increase the number of signal channels in free-space optical communication.
Abstract: We report an approach to the increase of signal channels in free-space optical communication based on composed optical vortices (OVs). In the encoding process, conventional algorithm employed for the generation of collinearly superimposed OVs is combined with a genetic algorithm to achieve high-volume OV multiplexing. At the receiver end, a novel Dammann vortex grating is used to analyze the multihelix beams with a large number of OVs. We experimentally demonstrate a digitized system which is capable of transmitting and receiving 16 OV channels simultaneously. This system is expected to be compatible with a high-speed OV multiplexing technique, with potentials to extremely high-volume information density in OV communication.
134 citations
TL;DR: The demonstrated electro-optical switch is composed of two coupled resonant cavities, each with an independently addressable PIN diode that enables operation of the switch without perturbing adjacent channels in a wavelength division multiplexing (WDM) system.
Abstract: We report on the demonstration of a broadband (60 GHz), spectrally hitless, compact (20 microm x 40 microm), fast (7 ns) electro-optical switch. The device is composed of two coupled resonant cavities, each with an independently addressable PIN diode. This topology enables operation of the switch without perturbing adjacent channels in a wavelength division multiplexing (WDM) system.
133 citations