Optical integrated nanospectrometer

Details Optical integrated nanospectrometer Optical integrated nanospectrometer

2011-02-15

2011-02-15

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S301000, C385S014000, C385S032000

Reexamination Certificate

active

07889336

ABSTRACT:
A planar nanospectrometer formed as a single chip that uses diffraction structures, which are combinations of numerous nano-features placed in a predetermined configuration and providing multiple functionalities such as guiding light, resonantly reflecting light at multiple wavelengths, directing light to detectors, and focusing light on the detectors. The diffraction structure can be described as a digital planar hologram that comprises an optimized combination of overlaid virtual sub-gratings, each of which is resonant to a single wavelength of light. Each device includes at least one sensor, at least one light source, and at least one digital planar hologram in an optical waveguide. The device of the present invention allows detection of small amounts of analytes in gases and liquids or on solid surfaces and can be particularly advantageous for field analysis of environmental safety in multiple locations because of its miniature size and low cost.

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Hamamatsu Photonics Co., Ltd. (http://sales.hamamatsu.com/assets/pdf/parts—C/c9407ma) etc—kacc1136e0.pdf) produces compact spectrometers of traditional configuration for ultraviolet, visible, and near-infrared spectral bands.
Ocean Optics (http://www.oceanoptics.com/products/usb2000+.asp), produces compact spectrometers of traditional configuration for ultraviolet, visible, and near-infrared spectral bands.
Vladimir Yankov, et al. “Multiwave-length Bragg Gratings and Their Application to Optical MUX/DEMUX Devices”, Photonic Technology Letters, vol. 15, pp. 410-412, 2003.
S. Grabarnik, et al. Miniature spectrometer. “Optics Express”, vol. 15, No. 6, pp. 3581-3588, 2007.
A. Bross Investigation of the use of CCDs as high-resolution position-sensitive detectors of ionizing radiation (Lawrence Berkeley Laboratory) (http://www.slac.stanford.edu/cgi-wrap/getdoc/icbp82-009.pdf).

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