Interferometer-based optical switching

Patent

Interferometer-based optical switching

- 22 Dec 2010

3

TL;DR: In this paper, a binary tree of splitters and interferometers between input ports and output ports is proposed to mitigate the signal degradation associated with signal splitting, which is mitigated by using the binary tree.

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Citations

Patent

Intersecting splitter, and multicast switch and multicast switch module using same

長谷川淳一, +1 more

- 09 Feb 2016

TL;DR: In this article, the branching ratio of each optical splitter is adjusted so that the branching ratios on the high side as to the number of intersections is high in comparison with the branching rates on the low side, and it is thereby possible to level the total loss.

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2

Patent

Device and method for switchably routing down-converted RF signals

Baldy Serge

- 17 Sep 2015

TL;DR: In this article, the authors propose a switchable interconnect arrangement for routing down-converted radio frequency (RF) signals from a plurality of inputs to multiple outputs, and a method of operating the same.

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1

Patent

Method for calibrating binary tree type four-level eight-node optical switch control parameters

Gao Xueyan

- 17 Jan 2020

TL;DR: In this article, a method for calibrating binary tree type four-level eight-node optical switch control parameters was proposed, where the size of light output by ports is measured and identified by optical power meters of the corresponding ports, and if assumptions in description are different, the sequence of the calibrated optical switch nodes is changed.

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References

Patent

Multidimensional switching networks

Jacob Sharony, +1 more

- 30 Apr 1993

TL;DR: In this paper, a switching network that utilizes at least three degrees of freedom, time, wavelength and space is defined, and each space channel between an input and an output is assigned a time slot and wavelength coordinate characteristic of the output and the input transmitter and output receiver are tuned to the appropriate time and wavelength coordinates.

...read moreread less

42

Patent

Programmable optical array

Young-Kai Chen, +3 more

- 21 Nov 2007

TL;DR: In this paper, the authors describe an apparatus having a topology that allows building complicated optical programmable arrays useful for manipulating the phase and/or amplitude of an optical signal, analogous to that of electronic field programmable gate arrays (FPGA's).

...read moreread less

6

Patent

Optical matrix switch

Hiromitsu Jinnai, +7 more

- 04 Mar 2008

TL;DR: In this article, the authors proposed an optical matrix switch including an add drop function and a cross connect function, which includes a plurality of input light waveguides 2x for connecting an input port I-x and a drop port D-x; a multiplicative output light waveguide 3x connecting an add port A-x, and an output port O-x.

...read moreread less

3

Patent

Time division wavelength split combination type optical speech path equipment

Kuroyanagi Tomoji, +1 more

- 24 Apr 1991

TL;DR: In this paper, a switch element composed of a wavelength selection filter, a time switch and a wavelength conversion element is provided to reduce the number of components by providing a switch elements composed of wavelength selection filters, time switch, and wavelength conversion elements and disposing the elements on respective cross points of input/output highway matrices to connect them.

...read moreread less

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