Surface plasmon-polariton Mach-Zehnder refractive index sensor

Nemova, Galina; Kabashin, Andrei V.; Kashyap, Raman

doi:10.1364/josab.25.001673

Cited by 55 publications

(25 citation statements)

References 11 publications

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“…Such photon crystal structure improves the effective angle, at which photon/plasmon coupling takes place, making possible the conservation of high SPR sensitivity even in compact waveguide-based implementations [116]. Alternatively, the angle of photon/plasmon coupling can be improved by using Bragg gratings [117]. Another promising approach is based on the adaptation of SPR technology to a Si-based platform, in which Si is used as a coupling materials instead of glass [118,119].…”

Section: Current Trends In the Development Of Phase-sensitive Spr Senmentioning

confidence: 99%

Phase‐sensitive surface plasmon resonance biosensors: methodology, instrumentation and applications

et al. 2012

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International audienceSurface Plasmon Resonance (SPR) has become a central tool for label-free characterization of biomolecular interactions. Based on monitoring of amplitude characteristics, conventional SPR sensors have been extensively explored, commercialized and applied for studies of many important interactions (antigen-antibody, protein-ligand etc), but this technology still lacks of sensitivity for the detection of relatively small and low copy number compounds. Phase-sensitive SPR has recently emerged as an upgrade of this technology to resolve the sensitivity issue. Profiting from a sharp phase jump under SPR and ultra-sensitive tools of its control, this technology offers up to 100-time improvement of the detection limit, giving access to the detection of trace amounts of small molecular weight analytes (drugs etc). This paper intends to provide a tutorial on basic concepts of phase detection in SPR sensing, compare the performance of phase- and amplitude-sensitive sensors, review recent progress in the development and applications of phase-sensitive SPR sensors, and outline future prospects and trends of this technology

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Section: Current Trends In the Development Of Phase-sensitive Spr Senmentioning

confidence: 99%

Phase‐sensitive surface plasmon resonance biosensors: methodology, instrumentation and applications

et al. 2012

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“…A novel approach to monitor a planar refractive index sensor with the "pure" SPP used as a sensor tool was suggested in [24]. A variation of this type of sensor may also be found in [25] but is based on the hybrid SPP mode.…”

Section: Guided Wave Surface Plasmon Sensorsmentioning

confidence: 99%

“…Thus, the transmitted signal suffers a change in the amplitude through interference of the guided and cladding modes. The overlap of the excited cladding mode with the SPP is small, as seen in Figure 11: the surface Plasmon hybrid-mode has a substantial amount of its energy associated with the guided mode and is therefore intrinsically less sensitive to the surrounding liquid than the "pure" SPP scheme proposed in [20][21][22][23][24]. The second LPG couples the cladding hybrid mode back into the core mode for direct detection.…”

Section: Guided Wave Surface Plasmon Sensorsmentioning

confidence: 99%

Surface Plasmon Resonance‐Based Fiber and Planar Waveguide Sensors

Kashyap

Nemova

2009

Journal of Sensors

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Bulk surface Plasmons resonance devices have been researched for several decades. These devices have found a special niche as high-sensitivity refractive index sensor in biomedical applications. Recent advances in guided wave devices are rapidly changing the capabilities of such sensors, not only increasing convenience of use but also opening opportunities due to their versatility. This paper reviews many of these devices and presents some of their salient features.

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“…r a;e p;s are the cross sections of the absorption (a) and stimulated emission (e) of the pump (p) and the signal (s). In the case of the fiber geometry [2] the intensities and powers of the pump or signal are connected through the effective area of the fiber mode as P p,s = I p,s A eff /C p,s , where A eff is the effective mode area, and C p,s is the overlap factor between ion distribution and the fields of the pump and signal. In the steady state, dN 2 /dt = 0 and Eq.…”

Section: Radiation Balanced Amplificationmentioning

confidence: 99%

“…To solve this problem increased mode areas have been suggested. These increased mode areas can be realised with large mode area fibers [1] or with amplification in a fiber cladding mode [2]. But even these schemes are ultimately limited by thermal effects if a high quality beam is required.…”

Section: Introductionmentioning

confidence: 99%