Search Results - "Spencer, Paul S"

Flat broadband chaos generation in a discrete-mode laser subject to optical feedback by Chang, Da, Zhong, Zhuqiang, Tang, Jianming, Spencer, Paul S, Hong, Yanhua

“…Chaos generation in a discrete-mode (DM) laser subject to optical feedback is experimentally explored. The results show that a DM laser with only optical…”
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Broad tunable photonic microwave generation based on period-one dynamics of optical injection vertical-cavity surface-emitting lasers by Ji, Songkun, Hong, Yanhua, Spencer, Paul S, Benedikt, Johannes, Davies, Iwan

“…Photonic microwave generation based on period-one dynamics of an optically injected VCSEL has been study experimentally. The results have shown that the…”
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Wideband Chaos With Time-Delay Concealment in Vertical-Cavity Surface-Emitting Lasers With Optical Feedback and Injection by Yanhua Hong, Spencer, Paul S., Shore, Keith Alan

“…Both the time-delay signature and the bandwidth of chaos have been investigated in four schemes of chaos generation in vertical-cavity surface-emitting lasers…”
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Stabilization of Photonic Microwave Generation in Vertical-Cavity Surface-Emitting Lasers With Optical Injection and Feedback by Songkun Ji, Chenpeng Xue, Valle, Angel, Spencer, Paul S., Hongqiang Li, Yanhua Hong

“…The effect of optical feedback on the stability and linewidth of a photonic microwave generated in an optically injected single-mode vertical-cavity…”
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Enhanced Flat Broadband Optical Chaos Using Low-Cost VCSEL and Fiber Ring Resonator by Yanhua Hong, Xianfeng Chen, Spencer, Paul S., Shore, Keith Alan

“…Low-cost vertical-cavity surface-emitting laser (VCSEL) and semiconductor optical amplifier (SOA) have been explored experimentally in a setup with a fiber…”
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Concealment of Chaos Time-Delay Signature in Three-Cascaded Vertical-Cavity Surface-Emitting Lasers by Yanhua Hong, Quirce, Ana, Bingjie Wang, Songkun Ji, Panajotov, Krassimir, Spencer, Paul S.

“…The time-delay signature and the chaos bandwidth in three-cascaded vertical-cavity surface-emitting lasers have been investigated experimentally. A peak value…”
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GHz Bandwidth Message Transmission Using Chaotic Vertical-Cavity Surface-Emitting Lasers by Yanhua Hong, Min Won Lee, Paul, J., Spencer, P.S., Shore, K.A.

“…Chaotic message encoding and decoding in unidirectionally coupled vertical-cavity surface-emitting lasers (VCSELs) with polarization-preserved and…”
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Flat Broadband Chaos in Vertical-Cavity Surface-Emitting Lasers Subject to Chaotic Optical Injection by Yanhua Hong, Spencer, P. S., Shore, K. A.

“…Four schemes for the generation of chaos in vertical-cavity surface-emitting lasers (VCSELs) by optical feedback and/or optical injection have been evaluated…”
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Dynamic regimes in semiconductor lasers subject to incoherent optical feedback by Rui Ju, Spencer, P.S.

“…The dynamics of a semiconductor laser subject to polarization-rotated (incoherent) optical feedback in the long cavity limit has been numerically and…”
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Reducing the cesarean delivery rates for breech presentations: administration of spinal anesthesia facilitates manipulation to cephalic presentation, but is it cost saving? by Weiniger, Carolyn F, Spencer, Paul S, Weiss, Yuval, Ginsberg, Gary, Ezra, Yossef

“…External cephalic version (ECV) is infrequently performed and 98% of breech presenting fetuses are delivered surgically. Neuraxial analgesia can increase the…”
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Investigation of polarization bistability in vertical-cavity surface-emitting lasers subjected to optical feedback by Yanhua Hong, Rui Ju, Spencer, P.S., Shore, K.A.

“…Polarization bistability in vertical-cavity surface-emitting lasers (VCSELs) subject to optical feedback has been studied both experimentally and…”
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Imaging of 3-D plasmaspheric electron density using GPS to LEO satellite differential phase observations by Spencer, Paul S. J., Mitchell, Cathryn N.

“…This paper outlines a new mathematical approach to imaging the electron density distribution in the high regions of the topside ionosphere and the plasmasphere…”
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Influence of Low-Frequency Modulation on Polarization Switching of VCSELs Subject to Optical Feedback by Yanhua Hong, Paul, J., Spencer, P.S., Shore, K.A.

“…The influence of low-frequency modulation on the polarization switching (PS) properties of vertical-cavity surface-emitting lasers (VCSELs) under optical…”
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Efficiency and Reliability of Ambiguity Resolution in Network-Based Real-Time Kinematic GPS by Grejner-Brzezinska, Dorota A, Kashani, Israel, Wielgosz, Pawel, Smith, Dru A, Spencer, Paul S. J, Robertson, Douglas S, Mader, Gerald L

“…Fast and reliable ambiguity resolution (AR) is particularly challenging in long-range real-time kinematic (RTK) global positioning system (GPS), since the…”
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The effects of polarization-resolved optical feedback on the relative intensity noise and polarization stability of vertical-cavity surface-emitting lasers by Yanhua Hong, Paul, J., Spencer, P.S., Shore, K.A.

“…The relative intensity noise of vertical-cavity surface-emitting lasers (VCSELs) subject to polarization-resolved optical feedback has been investigated…”
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Identification of the optimum time-delay for chaos synchronization regimes of semiconductor lasers by Peters-Flynn, S., Spencer, P.S., Sivaprakasam, S., Pierce, I., Shore, K.A.

“…It is shown that the optimum correlation for chaos synchronization of master-slave semiconductor lasers occurs at a delay time that is sensitive to both the…”
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Frequency domain analysis of the chaotic synchronization of injection-locked semiconductor lasers by Lea, Sam J., Spencer, Paul S.

“…The quality and degree of synchronization obtained between a chaotic master laser diode and a slave laser diode is usually assessed using a correlogram. This…”
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Optical injection dynamics of two-mode vertical cavity surface-emitting semiconductor lasers by Hong, Y., Spencer, P.S., Rees, P., Shore, K.A.

“…Two-mode vertical cavity surface-emitting lasers (VCSELs) subject to external optical injection are investigated experimentally. The spectrum of a VCSEL with…”
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Simple and Accurate Optical Frequency Domain Ranging Using Off-the-Shelf DFB Lasers Subject to Frequency-Shifted Optical Feedback by Paul, J., Yanhua Hong, Spencer, P.S., Pierce, I., Shore, K.A.

“…It is demonstrated that accurate distance measurement may be effected using a commercially available distributed feedback (DFB) semiconductor laser subject to…”
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Wide-band polarization-free wavelength conversion based on four-wave-mixing in semiconductor optical amplifiers by Yanhua Hong, Spencer, P.S., Shore, K.A.

“…Wide-band polarization free wavelength conversion based on four-wave mixing in semiconductor optical amplifiers (SOAs) subject to two pump beams has been…”
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