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Optical signal receiving transmitting apparatus

A transceiver device and optical signal technology, applied in electromagnetic transceivers, optics, light guides, etc., can solve the problems of increased manufacturing costs, high coupling efficiency, and crosstalk characteristics that exceed actual needs.

Inactive Publication Date: 2005-05-25
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the medium-distance and short-distance optical fiber communication network with less than 30km, only need the medium and small scale optical joiner system of the communication speed less than 250Mbps, the high coupling efficiency and crosstalk characteristic that the above-mentioned optical signal transceiving device has will exceed actual needs
[0008] In addition, in the manufacture of the above-mentioned optical signal transceiver, it is necessary to carry out (1) alignment of the semiconductor laser and the optical axis of the optical waveguide, (2) alignment of the slit of the WDM filter formed by the dicing saw and the optical waveguide. Positional alignment, (3) the positional alignment of the optical axis of the optical fiber and the optical waveguide as the external transmission path, but since high precision is required for these positional alignments, an expensive precision mounting device is required, Increased manufacturing costs

Method used

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  • Optical signal receiving transmitting apparatus
  • Optical signal receiving transmitting apparatus
  • Optical signal receiving transmitting apparatus

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Experimental program
Comparison scheme
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Embodiment approach 1

[0040]

[0041] First, the configuration of the optical signal transmitting and receiving device according to Embodiment 1 will be described.

[0042] FIG. 1 is a diagram showing an arrangement of optical components constituting an optical signal transmitting and receiving device according to Embodiment 1, figure 2 It is a cross-sectional view of the case where the optical signal transceiver device is divided by the A-A' line shown in Fig. 1, image 3 It is a cross-sectional view of the case where the optical signal transmitting and receiving device is divided along the line C-C' shown in FIG. 1 .

[0043] The optical signal transmitting and receiving device is composed of an optical platform 10 , a semiconductor laser 11 , a photodiode 12 , a photodiode 13 , a wavelength splitting filter 14 , a component 16 , an optical fiber 17 and a resin 19 . Each optical part is explained.

[0044] (1) Optical table 10

[0045] The optical table 10 is made of silicon with a refractiv...

Embodiment approach 2

[0101] Hereinafter, an optical signal transmitting and receiving device according to Embodiment 2 will be described with reference to the drawings.

[0102] Since the optical signal transmitting and receiving device of Embodiment 2 is similar to the optical signal transmitting and receiving device of Embodiment 1 in many respects, only the differences will be described. The difference is that as a wavelength splitting filter, a filter block is used.

[0103]

[0104] Figure 12 It is a drawing showing the arrangement of optical components constituting the optical signal transmitting and receiving device according to the second embodiment.

[0105] In the optical table 10 of the second embodiment, the groove 20 is formed instead of the groove 15 described in the first embodiment. A filter block 21 is embedded in the groove 20 .

[0106] The filter block 21 is made of glass and has a thickness of 100 μm or more. Such as Figure 12 As shown, the filter block 21 is disposed...

Embodiment approach 3

[0116] Hereinafter, an optical signal transmitting and receiving device according to Embodiment 3 will be described with reference to the drawings. Since the optical signal transmitting and receiving device of the third embodiment is the same as the optical signal transmitting and receiving device of the first embodiment in many respects, only the differences will be described. The difference is that it has a blocking filter to prevent the optical signal emitted from the semiconductor laser from entering the receiving photodiode.

[0117]

[0118] Figure 15 It is a drawing showing the arrangement of optical components constituting the optical signal transmitting and receiving device according to the third embodiment.

[0119] In the optical table 10 , in addition to the groove 15 and the groove 18 described in the first embodiment, the groove 22 is formed in parallel with the groove 15 . In this way, the blocking filter 23 is embedded in the groove 22 . In addition, the ...

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Abstract

The optical signal transceiver device of the present invention includes: a semiconductor laser, which emits light in a specific wavelength band; a photodiode, which receives light; an optical fiber, one end of which is introduced into the main body of the device, and light is incident and emitted on its end face; wavelength split filtering The device is separated and opposed to the semiconductor laser and one end of the optical fiber, and is located within the direction angle of the light of a specific wavelength band emitted by the semiconductor laser and the direction angle of the light emitted from the end face of the optical fiber, so that the specific wavelength light emitted from the semiconductor laser The end face of the incident fiber is incident on the end face of the optical fiber, and the photodiode receives the light emitted from the end face of the optical fiber.

Description

technical field [0001] The present invention relates to an optical signal transmitting and receiving device for transmitting and receiving optical signals through one optical fiber. Background technique [0002] In recent years, an optical subscriber system (fiber to the user system) utilizing WDM (Wavelength Division Multiplexing: wavelength division multiplexing) technology for realizing simultaneous transmission and reception of a plurality of optical signals through one optical fiber has been proposed. The so-called WDM refers to the multiplexing and simultaneous transmission of multiple optical signals of different wavelengths. [0003] In the user's residence that joins the optical subscriber system and the receiving station of the operator who operates the system, there are functions to convert electrical signals into optical signals and output them, and to convert received optical signals into electrical signals for reception. Optical signal transceiver device. [...

Claims

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Application Information

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IPC IPC(8): G02B6/42G02B5/28G02B6/122G02B6/293H01J40/14H01L31/0232H01S3/00H04B10/25H04B10/40H04B10/50H04B10/60H04J14/00H04J14/02
CPCH04J14/02
Inventor 西川透宇野智昭
Owner PANASONIC CORP