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Light waveguide with composite structure for integrating optical sensor

A composite structure and integrated optics technology, which is applied in the field of integrated optics and light sensing, can solve the problems of low sensor sensitivity and weak interaction, and achieve the effects of enhanced interaction, large process tolerance, and improved sensitivity

Inactive Publication Date: 2006-08-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the interaction between the light guide wave and the sensing film 3 is weak, which makes the sensitivity of the sensor very low

Method used

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  • Light waveguide with composite structure for integrating optical sensor
  • Light waveguide with composite structure for integrating optical sensor
  • Light waveguide with composite structure for integrating optical sensor

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Embodiment Construction

[0023] Such as figure 2 As shown, the optical waveguide of the present invention has a four-layer structure, including the lower cladding layer 1 and the core layer 2 of the pre-formed strip optical waveguide, the sensing film 3 above the core layer 2, and the sensing film 3 above the sensing film 3. Medium 4 containing the substance to be measured; the refractive index of the sensing film 3 is equal to or higher than the refractive index of the strip-shaped core layer 2 formed in advance, and the refractive index of the medium 4 containing the substance to be measured above the sensing film 3 is lower than that of the sensing film 3 The refractive index of the sensitive film 3; the refractive index of the lower cladding layer 1 of the pre-formed strip optical waveguide is lower than the refractive index of the core layer 2; forming an "inverted ridge" composite optical waveguide.

[0024] Since the structure of the composite optical waveguide has the above characteristics, s...

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Abstract

An optical wave guide with composite structure used in integrated optical sense consists of bottom covering and core layer of bar optical wave guide formed in advance, sensing film above core layer and media containing substance to be tested and being set above sensing film .It is featured as setting the sensing film refractivity to be equal or greater than refractivity of said core layer, setting refractivity of media containing substance to be tested to be less than refractivity of sensing film and setting said bottom covering refractivity to be less than refractivity of said core layer .

Description

technical field [0001] The invention relates to a method for manufacturing a glass optical waveguide, belonging to the fields of light sensing and integrated optics. Background technique [0002] Sensors based on optical principles, including fiber optic sensors and integrated optical sensors, have become one of the focuses of many researchers in recent years, because this type of sensor has the following unique advantages: [0003] · Anti-electromagnetic interference; [0004] ·Chemical corrosion resistance; [0005] Good electrical insulation; [0006] ·Low noise, high sensitivity; [0007] Easy to reuse, easy to form a network, and conducive to the use of existing optical communication technology to form a telemetry sensor network; [0008] It can realize the analysis of many different substances at the same time; [0009] Suitable for sensing in flammable and explosive environments; [0010] ·Low cost, suitable for mass production and application. [0011] Optical...

Claims

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Application Information

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IPC IPC(8): G02B6/02G02B1/00G02B6/26
Inventor 郝寅雷杨建义江晓清周强李锡华王明华
Owner ZHEJIANG UNIV