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Imaging spectrometer based on joint spatiotemporal modulation and mzi optical waveguide array

An imaging spectrometer and a combined modulation technology are applied in the field of imaging spectrometers to achieve the effects of reducing the size of the chip, reducing the volume and improving the detection sensitivity

Active Publication Date: 2018-11-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are currently no cases of its application in imaging spectrometers

Method used

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  • Imaging spectrometer based on joint spatiotemporal modulation and mzi optical waveguide array
  • Imaging spectrometer based on joint spatiotemporal modulation and mzi optical waveguide array
  • Imaging spectrometer based on joint spatiotemporal modulation and mzi optical waveguide array

Examples

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Embodiment 1

[0061] Specifically, for example, such as figure 2 As shown, the imaging system such as the front mirror 1 is placed at the bottom of the aircraft, and it is collected facing directly below. The imaging image plane of the front mirror 1 imaging system is an N×M image plane, and the push-broom direction of the aircraft is the upward push-broom in the figure. The imaging image plane corresponds to a row of N pixels corresponding to the parallel push-broom direction, and the input ports of the N speckle converters in the speckle converter array 4 are aligned with the N pixels along the row direction on the corresponding receiving imaging image plane The input ports of the N MZIs of the MZI array 5 receive and transmit the optical signals of the N picture elements in the row direction, and the distance between the input ports between the MZIs in the MZI array 5 and the distance between the pixels of the imaging image plane along the row direction the same spacing;

[0062] There...

Embodiment 2

[0065] Specifically, for example, such as image 3 As shown, the imaging system such as the front mirror 1 is placed at the bottom of the aircraft, and it is collected facing directly below. The imaging image plane of the front mirror 1 imaging system is an N×M image plane, and the push-broom direction of the aircraft is the upward push-broom in the figure. The imaging image plane is a row of N pixels corresponding to the parallel push-broom direction.

[0066] The input ports of the N speckle converters in the speckle converter array 4 of a piece of interferometric spectrometer chip 3 are aligned to receive the optical signals of N picture elements along the row direction on the imaging image plane, and the input ports between the MZIs in the MZI array 5 The pitch is the same as the pitch between the pixels of the imaging image plane along the row direction; the stacking direction of the M interferometric spectrometer chip 3 of the three-dimensional chip 8 is aligned with the...

Embodiment 3

[0070] Specifically, for example, such as image 3 As shown, the imaging system such as the front mirror 1 is placed at the bottom of the aircraft, and it is collected facing directly below. The imaging image plane of the front mirror 1 imaging system is an N×M image plane, and the push-broom direction of the aircraft is the upward push-broom in the figure. The imaging image plane is a row of N pixels corresponding to the parallel push-broom direction.

[0071] The input ports of the M speckle converters in the speckle converter array 4 of a piece of interferometric spectrometer chip 3 are aligned to receive the optical signals of M pixels along the column direction on the imaging image plane, and the input ports between the MZIs in the MZI array 5 The pitch is the same as the pitch between the pixels of the imaging image plane along the row direction; the stacking direction of the N interferometric spectrometer chips 3 of the three-dimensional chip 8 is aligned with the optic...

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Abstract

The present invention discloses a space-time joint modulation and MZI optical waveguide array-based imaging spectrometer. According to the imaging spectrometer, a slitless imaging system is adopted. The imaging spectrometer comprises a preset lens and an interferometer spectrometer chip layer or a three-dimensional chip, a plurality of interferometer spectrometer chip layers being stacked to form the three-dimensional chip; each interferometer spectrometer chip layer comprises an optical waveguide structure, a spot-size converter array, an MZI array and a detector array being connected with one another sequentially so as to form the optical waveguide structure; MZIs with different interference arm differences are arranged in parallel so as to form the MZI array; and the input port of each MZI receives pixel signals in the same row or column which are parallel to a push-scanning image area. According to the imaging spectrometer of the invention, the complexity of an optical path is simplified; the weight and size of the imaging spectrometer are decreased greatly; the imaging spectrometer has high integration and high stability; and the incident light flux of the system is greatly enhanced, so that the imaging spectrometer can be miniaturized and light-weighted.

Description

technical field [0001] The present invention relates to an imaging spectrometer, in particular to an imaging spectrometer based on space-time joint modulation and an MZI optical waveguide array, specifically a Fourier transform spectrometer based on space-time joint modulation and an MZI device in an integrated optical waveguide device. Background technique [0002] Optical instruments have always been an important part of space exploration and remote sensing of the Earth. Imaging spectrometers on remote sensing satellites and aircraft are important instruments for observing the atmosphere, oceans, and land. [0003] Imaging spectrometers are divided into telescope imaging systems and spectrometer systems. The relatively mature and good-performance spectroscopic spectrometers include dispersive spectrometers and Fourier transform spectrometers. They are all composed of discrete lenses, spectroscopic elements and detectors. Relatively large, high cost, and has high requiremen...

Claims

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Application Information

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IPC IPC(8): G01J3/28G01J3/45
CPCG01J3/2823G01J3/45
Inventor 杨旻岳何建军李明宇
Owner ZHEJIANG UNIV
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