Three-port optical circulator

An optical circulator, three-port technology, applied in the field of optical fiber communication

Pending Publication Date: 2020-10-23
武汉嘉迅光电有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Commercial optical circulators with traditional optical path structures that mee

Method used

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  • Three-port optical circulator
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Embodiment Construction

[0063] The present invention is further described in conjunction with the following examples.

[0064] In order to facilitate those skilled in the art to clearly understand the technical solution of the present invention, specific examples are given below to further describe the present invention. It should be noted that the following examples are only examples to illustrate the present invention, and should not be construed as limiting the protection scope of the present invention.

[0065] figure 1 A three-port optical circulator is shown, and the optical circulator includes: three ports (port I, port II and port III) arranged in parallel in sequence, a polarization conversion module 11, and a non-reciprocal polarization rotation module 21 , a polarization beam splitting prism 31 and a reflective prism 41, also comprising a polarizing film dispersion (PMD) compensation film 51 arranged between the polarization conversion module 11 and the non-reciprocal polarization rotatio...

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Abstract

The invention discloses a three-port optical circulator, comprising a first port, a second port and a third port and used for transmitting light incident from the first port to the second port and transmitting light incident from the second port to the third port. The optical circulator further comprises a polarization conversion module, a nonreciprocal polarization optical rotation module, a polarization beam splitter prism and a reflection prism. Compared with the prior art, a reflection-type folded optical path is adopted; and compared with a traditional optical isolator, the optical circulator has the advantages of being shorter and smaller in boundary dimension, simple in optical path structure, easy to manufacture in batches and higher in isolation degree in design, and further meetsapplication requirements on a single-fiber bidirectional transmission module in the field of digital communication.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a three-port optical circulator. Background technique [0002] The optical circulator is a very important non-reciprocal optical passive device with multi-port input and output in the optical fiber communication system. The characteristics of transmission and reverse sequence isolation can complete the separation of forward and reverse transmission light, so single-fiber bidirectional transmission systems, dense wavelength division multiplexers based on fiber gratings, optical amplifiers, optical time domain reflectometers, and optical fiber sensors It has a wide range of applications in traditional fields such as fiber optic testing and testing. [0003] With the advent of the big data era, the high-speed optical interconnection of data centers has gradually become the main growth point of the optical communication market. In data center applications, single-fiber bi...

Claims

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Application Information

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IPC IPC(8): G02B6/27
CPCG02B6/2746
Inventor 阚菁
Owner 武汉嘉迅光电有限公司
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