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Photoelectric temperature sensor

A temperature sensor and photodetector technology, applied in the field of integrated optoelectronics, can solve the problems of poor practicability and expensive temperature sensing system, and achieve the effect of reducing costs

Active Publication Date: 2014-06-25
北京爱杰光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both of these monitoring solutions require the combination of a narrow linewidth laser light source or a broadband light source and a high-resolution spectrometer, which makes the entire temperature sensing system too expensive and less practical

Method used

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but can not be used to limit the scope of the present invention.

[0031] (1) Basic working principle

[0032] figure 1 As shown, a photoelectric temperature sensor of the present invention is composed of a light source 1, an optical temperature sensing part 2, and a photoelectric detection part 3. The optical temperature sensing part 2 is implemented by an asymmetric Mach-Zehnder interferometer.

[0033] The optical temperature sensing part 2 of the asymmetric Mach-Zehnder interferometer is made up of a beam splitter 4, a first waveguide arm 5, a second waveguide arm 6 and a beam combiner 7; the first waveguide arm 5 and the second The waveguide arm 6 has an asymmetric geometry with different effective refractive indices n eff , a...

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Abstract

The invention relates to the technical field of integrated photoelectronics, in particular to a photoelectric temperature sensor in order to solve the technical problems. Thus, the light source requirement of the photoelectric temperature sensor is lowered, and the cost of a whole temperature sensing system is reduced. The photoelectric temperature sensor is composed of a light source, an optical temperature sensing part and a photoelectric detection part. The optical temperature sensing part is obtained through an asymmetric Mach-Zehnder interferometer. Two arms of the asymmetric Mach-Zehnder interferometer are of an asymmetric geometric structure, the optical phase difference of the two arms is within the range from -2 pi to 2 pi, and the asymmetric geometric structure of the two arms is implemented by selecting different types of waveguides such as a ridged waveguide, a channel waveguide and a strip-shaped waveguide or by selecting the same type of waveguides with different structural parameters. The waveguides of the asymmetric Mach-Zehnder interferometer are non-good conductor material waveguides or surface plasma waveguides combined by non-good conductor material and metal, wherein the non-good conductor material comprises mediums, organic matter and the like.

Description

technical field [0001] The invention relates to the technical field of integrated optoelectronics, in particular to a photoelectric temperature sensor. Background technique [0002] The photoelectric temperature sensor in the field of integrated optoelectronic technology has been extensively studied due to its small size and strong anti-interference. The photoelectric temperature sensor is composed of a light source, a temperature sensing part and a photoelectric detection part, and the temperature sensing part is the core research content of the photoelectric temperature sensor. At present, there are many kinds of photoelectric temperature sensors that can be integrated in the prior art, such as: micro-ring resonator, Bragg reflective waveguide, multi-mode interferometer MMI and so on. Due to the limitation of the structure of the temperature sensing system, the temperature sensing part of the prior art is divided into two categories according to the sensing principle, mon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32
Inventor 周治平邓清中李心白
Owner 北京爱杰光电科技有限公司
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