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Journals and Conferences
The differential diagnosis of heel pain is extensive. The plantar heel pain is usually due to mechanical etiology, including plantar fasciitis, calcaneal spur, stress fracture, and nerve entrapment. Tumor is a rare cause of plantar heel pain. We present a case of chronic plantar heel pain with a vascular leiomyoma at the heel pad.
Recently, degree of polarization (DOP) of light has been utilized as a parameter to monitor optical signal-to-noise-ratio (OSNR). However, in the presence of polarization-mode dispersion (PMD), when using DOP to determine OSNR, OSNR is always underestimated due to the depolarization effect induced by PMD. In this paper, we propose and experimentally… (More)
This paper proposes and demonstrates a nonlinear distortion reduction scheme for subcarrier multiplexed optical CATV networks based on optical sampling and optical time-division multiplexing (OTDM) techniques. Inter-modulation distortion is reduced by about 10 dB for a 40-channel system. The proposed optical sampling and OTDM process is shown to induce… (More)