Terahertz low-loss curved waveguide
A bending waveguide and low-loss technology, applied in the field of terahertz low-loss bending waveguides, can solve the problems of large lateral electrical size and large loss, and achieve the effects of reducing bending loss, simple structure, and convenient use.
Active Publication Date: 2016-01-20
UNIV OF SHANGHAI FOR SCI & TECH
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Internationally, Maier et al. studied the propagation characteristics of terahertz waves on structured metal surfaces in 2008 (NaturePhotonics, 2, 175-179, 2008), and Nahata et al. studied pseudo-surface plasmon waveguides on rectangular groove arrays in 2011 (OpticsExpress , 19, 1072-1080, 2011), but all these structures have large transverse electrical dimensions, resulting in large losses in the case of bending
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[0016] The terahertz low-loss curved waveguide of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only illustrative illustrations of the present invention, and are not intended to limit it in any way.
[0017] like figure 1 As shown, in a preferred embodiment according to the present invention, the terahertz low-loss curved waveguide includes two metal plates, namely the outer waveguide plate 1 and the inner waveguide plate 2, both of which are curved metal plates, and the curved portion (The corner) is arc-shaped, the outer waveguide plate 1 and the inner waveguide plate 2 are placed in parallel and there is a certain gap between the outer waveguide plate 1 and the inner waveguide plate 2, and the outer waveguide plate 1 and the inner waveguide plate 2 are opposite to each other. Periodic grooves are provided on the surface, that is, period...
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The invention relates to a terahertz low-loss bent waveguide which comprises an outer waveguide plate and an inner waveguide plate. The outer waveguide plate and the inner waveguide plate are bent metal plates and bent portions of the plates are arc. The outer waveguide plate is parallel to the inner waveguide plate with a distance in between. Periodical grooves are formed in opposite surfaces of the outer waveguide plate and the inner waveguide plate. Terahertz waves are input from one end of the outer waveguide plate and one end of the inner waveguide plate in a horizontal magnetic wave mode and enter a gap between the outer waveguide plate and the inner waveguide plate so that surface waves can be transmitted in the gap, and are further transmitted to the other end of the outer waveguide plate and the outer end of the inner waveguide plate. Thus, low-loss bent transmission of the terahertz waves is achieved. According to the technical scheme, the bent loss of the terahertz waves is low and the terahertz low-loss bent waveguide is simple in structure, convenient to use and low in cost.
Description
technical field [0001] The invention relates to a terahertz low-loss curved waveguide. Background technique [0002] Terahertz (THz) waves are electromagnetic waves that lie between microwaves and far infrared rays. In recent years, with the development of ultrafast laser technology, the generation of terahertz pulses has a stable and reliable excitation light source, enabling people to study terahertz. Terahertz has a wide range of applications in biomedicine, safety monitoring, non-destructive detection, astronomy, spectroscopy and imaging technology, and information science. Terahertz waveguide is a basic transmission device for terahertz applications and a key device for terahertz communication systems. Internationally, Maier et al. studied the propagation characteristics of terahertz waves on structured metal surfaces in 2008 (NaturePhotonics, 2, 175-179, 2008), and Nahata et al. studied pseudo-surface plasmon waveguides on rectangular groove arrays in 2011 (OpticsExp...
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IPC IPC(8): H01P3/14G02B6/125
Inventor 陈麟朱亦鸣高春梅徐嘉明
Owner UNIV OF SHANGHAI FOR SCI & TECH