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Angle-tuned filter array and method thereof

A technology for tuning filters and filters, which is applied in the fields of optical filters, optics, instruments, etc.

Inactive Publication Date: 2016-06-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Determine the number of sub-filters according to the required tuning range

Method used

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  • Angle-tuned filter array and method thereof
  • Angle-tuned filter array and method thereof
  • Angle-tuned filter array and method thereof

Examples

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Embodiment Construction

[0053] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0054] One aspect of the present invention provides an angle-tunable filter array, which is used to increase the spectral coverage. Several sub-filters with tuning ranges covering different bands are combined in an array. Each sub-filter has a certain angle tuning range. This range is divided into two parts: the effective angle tuning range and the superposition range. The effective angle tuning range refers to the angle tuning range a...

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Abstract

The invention provides an angle-tuned filter array for increasing a spectrum coverage range. A plurality of sub filters whose tuned ranges cover different wave bands are combined together in an array mode, each sub filter has a certain angle-tuned range, the range is divided into an effective angle-tuned range and an overlapped range, and through overlapping of the wave bands, the wave band range of each sub filter is not totally used, and thus, the angular dispersion in the effective angle-tuned wave band of each sub filter only needs to be ensured to meet requirements. The invention also provides a method of acquiring a regularly-distributed spectrum by using the angle-tuned filter array and a method of processing the filter array. By adopting the filter array wave band overlapping mode, the spectrum coverage range is increased, a tiny small part of the angular dispersion of the filter is avoided, and a large-angular dispersion and wide-tuned spectrum range is realized.

Description

technical field [0001] The invention belongs to the field of optical imaging, in particular to an angle-tuning filter and a method and processing method for obtaining regularly distributed spectra by using the array, which can be used for optical information processing, analysis, and system devices such as spectrometers, spectrophotometers, and DWDMs. Spectral realization. Background technique [0002] Optical filters are important components in optical systems, and tunable filters play a key role in modern optical communication systems and sensor networks. In recent years, there are more and more applications of tunable filters, and it is urgent to research and develop tunable filters with low cost, small size and wide tuning range. [0003] Angle-tunable filter is one of the tunable filters, and its tuning method mainly utilizes the angle-sensitive characteristics of the filter: when the incident angle of the incident beam on the surface of the filter changes, as the inci...

Claims

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Application Information

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IPC IPC(8): G02B5/20G02B27/10
CPCG02B5/201G02B27/1006
Inventor 刘子骥何璇郑杰杨建忠郑兴
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA