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Photoelectric switch

A switch and optoelectronic technology, applied in the direction of data exchange network, electrical components, wavelength division multiplexing system, etc., can solve the problems of expensive tunable lasers, complex and expensive control, etc., to increase scalability, reduce hardware, reduce The effect of power consumption

Active Publication Date: 2020-04-14
ROCKLEY PHOTONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, tunable lasers are generally more expensive than fixed-wavelength lasers, and their control can be more complex and expensive

Method used

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  • Photoelectric switch
  • Photoelectric switch
  • Photoelectric switch

Examples

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Embodiment Construction

[0083] figure 1 It is shown how individual waveguide Mach-Zehnder interferometers can be chained together to ultimately form a Mach-Zehnder interferometer (MZI) router for use with the present invention. exist Figures 12 to 17 A more detailed example is shown in . figure 1 The switch shown in includes 8 Mach-Zehnder interferometers arranged in a cascade, each MZI has two input arms split at an input coupler and two output ports, the two arms feeding the split paths to them is recombined in the output coupler.

[0084] Whenever possible, both arms have the same length. In an alternative embodiment (not shown) (particularly where it is desired that the output defaults to one MZI output port over the other), the two arms of the MZI may have unbalanced arms. for figure 1 In the MZI router shown in , switching to any of the 8 outputs may be desired, and there is no preference for one path through the MZI over the other, so arms of equal length are used. It may be difficult t...

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PUM

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Abstract

An optical switch for switching signals from an input device to an output device comprising a plurality of switch modules each connected or connectable to an optical interconnect area, wherein: each switch module is configured to output a WDM output signal to the optical interconnect The area, and the optical switch also includes one or more MZI routers, each configured to direct the WDM output signal from its source switch module toward its destination switch module, wherein the one or more MZI routers are located at each switch module on or in the interconnection area.

Description

technical field [0001] The present invention relates to an optoelectronic switch comprising a plurality of switch modules utilizing one or more MZI routers to direct signals from input devices to output devices. Background technique [0002] Optical switches that use a combination of active and passive components to switch in the optical domain are known. The path of an optical signal in a passive component (such as an AWG) will depend on its wavelength. In some related art configurations, it is necessary to provide a tunable laser to achieve control of the wavelength of the signals, and thus ensure that each signal reaches its intended destination port, as a result of the optical properties of the passive optical switching components. However, tunable lasers are generally more expensive than fixed-wavelength lasers, and their control can be more complex and expensive. [0003] US 14 / 715,448 describes the use of aggregation of optical packets together with wavelength divis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04Q11/00H04L12/931
CPCH04Q2011/0011H04Q2011/0016H04Q2011/006H04Q11/0005H04J14/02
Inventor A.G.里克曼
Owner ROCKLEY PHOTONICS INC