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A curvature sensor based on tapered triple cladding quartz specialty fiber (TTCQSF) is proposed. It is formed by a section of triple cladding quartz specialty fiber which is tapered after splicing both ends of it with single-mode fibers (SMFs). Then a SMF-TTCQSF-SMF structure is fabricated. The experimental results show that the curvature sensitivity is -6.52nm/m-1 in the range of 0~1.293m-1, and...
Using a direct double-pass and an isolator-assisted double-pass waveguide-based Mach-Zehnder interferometer (MZI), we demonstrate high-performance SOA-based multiwavelength fiber ring lasers with respective channel spacing of 21.5 GHz and 43 GHz. By changing the fiber ring cavity loss of direct double-pass MZI based configuration, we show that over one hundred of lasing wavelengths in the C- or L-band...
We propose a novel broadcasting scheme for WDM-PON access networks and experimentally demonstrate the downstream transmission performance. Broadcasting data is generated via subcarrier modulation technique and the un-modulated carrier acts as the seeder for FP-LD injection locking direct modulation, which is compatible with current WDM-PON infrastructures. 2.5 Gb/s broadcasting data and 2.5 Gb/s point-to-point...
We investigate 10-Gb/s uncooled, directly modulated free-running 1.55-mum VCSEL transmission for WDM-PONs. Wavelength variation with bias current and dispersion tolerance are evaluated for WDM-PON transmission. Errorfree transmission over 10-km SMF and 80-km SMF+DCF have been demonstrated.
We propose and demonstrate a novel protection scheme for WDM passive optical networks based on sub-ring architecture. Experiment of 10 Gb/s downstream and 1.25 Gb/s upstream transmissions was carried out to verify the proposed protection scheme.
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