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Heat-adjustable optical switch

An optical switch, optical technology, applied in the field of optics and optical communication, can solve the problems of relying on mechanization, unable to realize the tunable transmission band bandwidth, complex structure, etc.

Pending Publication Date: 2021-12-14
FUZHOU PHOTOP QPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of method relies on mechanization on the one hand, has a complex structure, large volume, and poor stability.
[0004] Chinese invention patent CN112578494 reports a tunable optical filter based on Si:H. The optical filter realizes the tunable central wavelength of the transmission band through temperature adjustment, but cannot realize the tunable bandwidth of the transmission band.

Method used

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  • Heat-adjustable optical switch

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Experimental program
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Effect test

Embodiment 1

[0036] This embodiment is an optical switch made of a thermally tunable short-wave pass filter, such as figure 1 Its structure includes a temperature controller 101 and a thermally tunable filter 102. The thermally tunable filter is placed on the temperature controller 101. The thermally tunable filter 102 includes an optical substrate and a conventional bandpass filter on one side of the optical substrate. The optical film stack and the thermally tunable long-pass filter film stack on the other side. The optical matrix material is WMS-15.

[0037] In Embodiment 1, different temperatures are set by the temperature controller 101, so that the corresponding thermally tunable long-wave pass spectrum on the thermally tunable filter 102 is red-shifted due to temperature drift, and the conventional optical filter spectrum is different at the same temperature. It will be red-shifted, so as to achieve the effect of adjusting the central wavelength and bandwidth of the transmission ba...

Embodiment 2

[0048] This embodiment is an optical switch composed of thermally tunable long-wave pass and short-wave pass filters, and its structure includes two temperature controllers and two thermally tunable filters, wherein the thermally tunable filters are placed on the temperature controller superior.

[0049] Such as Figure 5 As shown, the embodiment 2 sets different temperature combinations through the temperature controllers 101-1 and 101-2, so that the corresponding thermally tunable long-wave pass spectrum on the thermally tunable filter 102-4 corresponds to that on the 102-5 The temperature drift of the thermally adjustable short-wave pass spectrum produces a red shift. Through the red shift of different temperature drifts corresponding to different temperatures, the effect of adjusting the central wavelength and bandwidth of the transmission band is achieved.

[0050] Such as Figure 5 The two thermally tunable filters 102-4 and 102-5 shown include an optical substrate, an...

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Abstract

The invention discloses a heat-adjustable optical switch, which comprises a temperature controller and a heat-adjustable filter, the heat-adjustable filter comprises an optical substrate and an optical filter film stack on the optical substrate, the optical filter film stack is formed by alternately stacking high-refractive-index film layers and low-refractive-index film layers, and the high-refractive-index material of the optical filter film stack is Si: H or SiOxHy. The wavelength shift coefficient at the 50% transmittance of the long-wave-pass or short-wave-pass filtering film stack is greater than 90 pm / DEG C and less than 300 pm / DEG C. According to the invention, the bandwidth and the central wavelength of the optical switch can be regulated and controlled through temperature at the wave band of 800-4000 nm.

Description

technical field [0001] The invention relates to the field of optics and optical communication, in particular to a thermally adjustable optical switch. Background technique [0002] The optical switch is one of the core devices to realize the all-optical network. It is mainly used for the selection, switching and modulation of optical signals in optical communication systems and optical fiber sensing systems. At present, the main technologies used in optical switches include MEMS, mechanical, thermo-optic, photoelectric, acousto-optic, and bubbles. Especially the MEMS optical switch has the advantages of small size, high integration, fast response speed and good reliability. [0003] The optical switch based on the traditional optical bandpass filter can select and modulate the optical signal by adjusting the incident angle of the light to realize the function of the optical switch. However, this kind of method depends on mechanization on the one hand, has a complex structu...

Claims

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Application Information

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IPC IPC(8): G02B6/35
CPCG02B6/354G02B6/3586
Inventor 吴砺郑祖赐刘哲李阳
Owner FUZHOU PHOTOP QPTICS CO LTD