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Nonlinear wavelength generations by using the optical waveguides are more compact, low cost, and efficient than using the traditional solid state systems [1], and the generated broadband light sources can be utilized in optical coherence tomography, frequency metrology, optical communications, and many other. In this work, the high quality of tantalum pentoxide (Ta2O5) micro-ring resonator has been...
All-optical processing and generation are regarded as a key solution to achieve ultrahigh bitrate communication in next generation. Silicon based optical waveguides have been widely developed, including ultrafast electrical-optical modulator, splitter, wavelength generator, and etc. However, the carrier relaxation issues as well as inevitable two-photon absorption in communication regions limit its...
The low-loss and CMOS compatible Ta2O5 based optical waveguide has been demonstrated. The quality factor of 50,000 in the Ta2O5 micro-ring resonator is fabricated. Moreover, the four-wave-mixing has been realized in the submicron Ta2O5 channel waveguide.
A low-pattern-dependent-and-chirp-compensated data transmission is demonstrated from monolithic integration of EAM and SOA. By reversed saturation behaviors between EAM and SOA, clear 10Gbit/s eye diagram with 0.6 GHz chirp-compensation and enhanced signal-to-noise ratio is realized.
To achieve more accurate measurements of the mobile station (MS) location, it is possible to integrate many kinds of measurements. In this paper we proposed several hybrid methods that utilized time of arrival (TOA) at seven base stations (BSs) and the angle of arrival (AOA) information at the serving BS to give location estimation of the MS in non-line-of-sight (NLOS) environments. From the viewpoint...
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