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Systems and methods for all-optical signal regeneration based on free space optics

A free space, optical signal technology, applied in the field of signal processing, can solve the problems of large work space, equipment space occupation (size limitation, increase the final cost of the optical system, etc.

Inactive Publication Date: 2008-05-21
KAILIGHT PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, the management and alignment of fibers requires a large workspace, creating severe constraints on the footprint (size) of the equipment
Additionally, long fibers introduce chromaticity and polarization dispersion into the signal being converted, increasing the final cost of the optical system

Method used

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  • Systems and methods for all-optical signal regeneration based on free space optics
  • Systems and methods for all-optical signal regeneration based on free space optics
  • Systems and methods for all-optical signal regeneration based on free space optics

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Embodiment Construction

[0017] The following description refers to the accompanying drawings which form a part hereof, and in which exemplary embodiments of the invention may be practiced by means of the illustrations. These embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and changes may be made without departing from the spirit of the invention. Accordingly, the following description should not be taken as limiting, and the scope of the present invention is only defined by the appended claims.

[0018] Referring now to FIG. 1 , a free space optics (FSO) based all-optical signal regenerator 100 is depicted in accordance with an exemplary embodiment of the present invention. The signal input single-mode fiber (SMF) and collimator 105 are coupled to a non-polarizing beam combiner 145 . Non-polarizing beam combiner 145 is coupled to non-polarizing beam splitter 140 . Non...

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Abstract

System and methods for all-optical signal regeneration based on free space optics are described. In one exemplary embodiment, a method for regenerating an optical signal comprises counter-propagating an input signal and a regenerating signal within an all-optical signal regenerator based on free space optics, wherein the input signal and the regenerating signal have the same wavelength, the all-optical signal regenerator based on free space optics comprises a Sagnac loop interferometer which includes a semiconductor optical amplifier comprising a first multimode interference device and a second multimode interference device, the first multimode interference device and the second multimode interference device being operated for providing input and receiving and outputting through the semiconductor optical amplifier; and extracting a regenerated output signal from the Sagnac loop interferometer.

Description

technical field [0001] The present invention relates generally to signal processing, and more particularly to systems and methods for all-optical signal regeneration based on free-space optics. Background technique [0002] In communication systems, signals are often transmitted over long distances. Transmission over such long distances results in signal degradation due to, for example, attenuation, interference, and other impairments. Therefore, some systems use signal repeaters or regenerators to receive the degraded signal and restore its original shape and amplitude. [0003] The optical fiber communication system in the prior art uses an electrical signal repeater, which receives an optical signal from an optical transmission medium, converts the optical signal into an electrical signal, restores the shape and amplitude of the electrical signal, and then converts the electrical signal Convert back to light for transmission on another optical medium. This process, als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/17H04B10/10H04B10/516H04B10/11H04B10/524H04B10/532H04B10/556H04B10/58H04B10/61
CPCG02F2201/05G02F1/3519H04B10/299
Inventor 萨吉耶·查德卡尼夫·纳尔基斯哈伊姆·查耶特沙尔瓦·本-埃兹拉埃雷尔·格拉诺特鲁文·扎伊贝尔阿里耶·舍尔沙伊·察多克尼尔·沙哈尔
Owner KAILIGHT PHOTONICS
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