N ov 2 00 6 Highly dispersive photonic band - gap - edge optofluidic biosensors
نویسنده
چکیده
Highly dispersive photonic band-gap-edge optofluidic biosensors are studied theoretically. We demonstrate that these structures are strongly sensitive to the refractive index of the liquid, which is used to tune dispersion of the photonic crystal. The upper frequency band-gap edge shifts about 1.8 nm for δn = 0.002, which is quite sensitive. Results from transmission spectra agree well with those obtained from the band structure theory.
منابع مشابه
Proposal of highly sensitive optofluidic sensors based on dispersive photonic crystal waveguides
Optofluidic sensors based on highly dispersive two-dimensional photonic crystal waveguides are theoretically studied. Results show that these structures are strongly sensitive to the refractive index of the infiltrated liquid(nl), which is used to tune dispersion of the photonic crystal waveguide. Waveguide mode-gap edge shifts about 1.2 nm for δnl=0.002. The shifts can be explained well by ban...
متن کاملResonance Raman scattering in photonic band-gap materials
We study the resonance Raman scattering of light from a three-level atom embedded in a photonic band-gap material or in a frequency dispersive medium whose photon spectrum exhibits a gap due to photon coupling to medium excitations such as excitons and optical phonons. We demonstrate that the one-particle spectrum of the system consists of either a continuous part with energy lying outside the ...
متن کاملتأثیر گاف نوار فوتونی بر انتشار پالس بازتابی از بره آلاییده شده توسط اتم‌های دو ترازی و سه ترازی
In this paper the effect of photonic band gap on the group velocity of reflected pulse from a dielectric slab doped with two-level or three-level atoms has been investigated. It is assumed that the slab is sandwiched between a uniform medium (like vacuum) and a one-dimensional photonic crystal. It is shown that the reflected pulse from the slab doped with two-level (three-level) atoms will be...
متن کاملPhase Properties of One-Dimensional Quaternary Photonic Crystals
In this paper, properties of reflection phase in one-dimensional quaternary photonic crystals combining dispersive meta-materials and positive index materials are investigated by transfer matrix method. Two omnidirectional band gaps are located in the band structure of considered structure. However, we limit our studies to the frequency range of the second wide band gap. We observe that the val...
متن کاملSlow-light enhancement of Beer-Lambert-Bouguer absorption
Optical techniques are finding widespread use in chemical and bio-chemical analysis, and Beer–Lambert– Bouguer (BLB) absorption in particular has become one of the classical workhorses in analytical chemistry [1]. During the past decade, there has been an increasing emphasize on miniaturization of chemical analysis systems [2] and naturally this has stimulated a large effort in integrating micr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006