An optical module for dense multi-wavelength multiplexing

An optical module and multi-wavelength technology, which is applied in the field of optical fiber communication, can solve the problems of narrow wavelength interval of four optical signals, high incident angle sensitivity, narrow passband width, etc., to reduce input cost, low incident angle sensitivity, The effect of wide passband width

Active Publication Date: 2019-03-01
NINGBO YUDA COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the narrow wavelength intervals of the four optical signals, the coating of the wavelength division multiplexing diaphragms 23, 24, 25, and 26 is very difficult and costly, and domestic coating manufacturers cannot realize it.
Even these wavelength division multiplexing diaphragms that have been commercially available have narrow passband width, high sensitivity to incident angle, and large insertion loss

Method used

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  • An optical module for dense multi-wavelength multiplexing
  • An optical module for dense multi-wavelength multiplexing
  • An optical module for dense multi-wavelength multiplexing

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Embodiment 1

[0026] like Figure 1-5 As shown, the present invention includes an optical signal processing unit A, an optical signal processing unit B, and multiple optical signals with different wavelengths from each other. The multiple optical signals with different wavelengths from each other include a first optical signal 11, a second optical signal 12. The third optical signal 13, the fourth optical signal 14, the fifth optical signal 15, the sixth optical signal 16, the seventh optical signal 17, the eighth optical signal 18, the first optical signal 11 to the eighth optical signal 18 have The different wavelengths are λ1...λ8. The wavelengths of the first, second, third, fourth, fifth, sixth, seventh, and eighth optical signals are arranged in the order from long-wave to short-wave, or from short-wave to long-wave, in the optical signal processing unit In B, the first wavelength division multiplexing prism 21 is used to multiplex the first, third, fifth, and seventh optical signals ...

Embodiment 2

[0031] This embodiment is preferably as follows on the basis of Embodiment 1: an optical module for dense multi-wavelength multiplexing, including an optical signal processing unit A, an optical signal processing unit B, and multiple optical signals with different wavelengths from each other. The optical signals with different wavelengths from each other include the first, second, third, fourth, fifth, sixth, seventh, and eighth optical signals, and the wavelengths of the first, second, third, fourth, fifth, sixth, seventh, and eighth optical signals are in accordance with the Long-wave to short-wave, or sequenced from short-wave to long-wave, use the first wavelength division multiplexing prism in the optical signal processing unit B to multiplex the first, third, fifth, and seventh optical signals to generate the first multiplexed light signal, using a second wavelength division multiplexing prism in the optical signal processing unit B to multiplex the second, fourth, sixth,...

Embodiment 3

[0037] like Figure 4 As shown, the present embodiment is preferably as follows on the basis of the foregoing embodiments: the first displacement plate is also arranged between the first right-angle prism and the first polarization multiplexing prism, and the second right-angle prism and the second 45 degree 1 / 4 wave The second displacement sheet is also arranged between the sheets, the third displacement sheet is also arranged at the output end of the first polarization multiplexing prism light signal combination beam, and the third displacement sheet is also arranged on the adjacent surface of the first displacement sheet and the first polarization multiplexing prism. Three 45 degree 1 / 2 wave plates, the fourth 45 degree 1 / 2 wave plate is also arranged on the adjacent surface of the second displacement plate and the second 45 degree 1 / 4 wave plate, and the third displacement plate and the first polarization The fifth 45 degree 1 / 2 wave plate on the adjacent face of the multi...

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Abstract

The invention discloses a dense multi-wavelength combination optical module, which comprises an optical signal processing unit A, an optical signal processing unit B and a plurality of paths of optical signals having different wavelengths. The plurality of paths of optical signals having different wavelengths comprise first, second, third, fourth, fifth, sixth, seventh and eighth optical signals; the optical signal processing unit B utilizes a first wavelength division multiplexing prism to carry out multiplexing on the first, third, fifth and seventh optical signals to generate a first multiplexing optical signal; the optical signal processing unit B utilizes a second wavelength division multiplexing prism to carry out multiplexing on the second, fourth, sixth and eighth optical signals to generate a second multiplexing optical signal; and the optical signal processing unit A carries out multiplexing on the first multiplexing optical signal and the second multiplexing optical signal transmitted from the optical signal processing unit B and outputs the multiplexed signal. Through the principle above, investment is reduced, and insertion loss is small; and compared with a conventional optical module, the optical module can realize denser optical signal combination, and realizes wider passband width.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical module for dense multi-wavelength multiplexing. Background technique [0002] Due to the rapid development of optical fiber communication, as the demand for transmission capacity of a single optical fiber increases (such as the transmission of video images, etc.), it is directly required to maximize the bandwidth of the optical fiber. Wavelength Division Multiplexing (WDM) technology is one of the key technologies used to increase transmission capacity. A WDM system multiplexes a plurality of optical signals whose respective wavelengths are different from each other. In recent years, WDM of optical modules has been demanded. For example, TOSA as an optical module for optical modules having a light emitting unit for wavelength multiplexing in combination with optical signals of different wavelengths emitted from a plurality of light sources is known...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/293
CPCG02B6/29373G02B6/2938
Inventor 钟星
Owner NINGBO YUDA COMM TECH
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