Fiber coupling module

Patent metadata

Field	Value
Publication number	US-9696501-B2
Application number	US-201415311874-A
Country	US
Kind code	B2
Filing date	Jun 12, 2014
Priority date	Jun 12, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A fiber coupling module comprises an optical fiber connector detachable from an optical fiber cable, wherein an end surface of the optical fiber cable is treated with an anti-reflection coat to set the reflectance lower than a predetermined value relative to the light of a first wavelength band and to set the reflectance higher than a predetermined value relative to the light of a second wavelength band excluding the first wavelength band, and the fiber coupling module connects to the optical fiber cable through said optical fiber connector. A main light source outputs the light of the first wavelength band to the optical fiber cable. An aiming light source outputs the light of the second wavelength band to the optical fiber cable. A detection element that detects the connection status of the optical fiber cable to the optical fiber connector based on the light of the second wavelength band reflected from the end surface of the optical fiber cable.

First claim

What is claimed is:

1. A fiber coupling module comprising:
an optical fiber connector detachable from a optical fiber cable;
an end surface of the optical fiber cable is treated with an anti-reflection coat to set a first reflectance lower than a predetermined value relative to a light of a first wavelength band and to set a second reflectance higher than a predetermined value relative to a light of a second wavelength band excluding said first wavelength band;
said fiber coupling module connecting said optical fiber cable through said optical fiber connector;
a main light source that outputs the light of said first wavelength band to said optical fiber cable;
an aiming light source that outputs the light of said second wavelength band to said optical fiber cable; and
a detection element detects a connection status of said optical fiber cable to said optical fiber connector based on the light of said second wavelength band reflected from said end surface of said optical fiber cable.

2. The fiber coupling module according to claim 1 , wherein:
said aiming light source is a light source providing a longer wavelength than said first wavelength band.

3. The fiber coupling module according to claim 2 , wherein:
said aiming light source is a visible light source and said visible light source outputs a beam to an emitting end of said optical fiber.

4. The fiber coupling module according to any one of claim 2 , wherein:
each of said aiming light source and said detection element is disposed at a position other than a light axis of a beam from said main light source.

5. The fiber coupling module according to claim 1 , wherein:
said aiming light source is a visible light source and said visible light source outputs a beam to an emitting end of said optical fiber.

6. The fiber coupling module according to claim 5 , wherein:
at least a part of beam from said visible light source can be set within the scope of a numerical aperture of said optical fiber cable and is output to the emitting end of said optical fiber cable.

7. The fiber coupling module according to any one of claim 6 , wherein:
each of said aiming light source and said detection element is disposed at a position other than a light axis of a beam from said main light source.

8. The fiber coupling module according to any one of claim 5 , wherein:
each of said aiming light source and said detection element is disposed at a position other than a light axis of a beam from said main light source.

9. The fiber coupling module according to any one of claim 1 , wherein:
each of said aiming light source and said detection element is disposed at a position other than a light axis of a beam from said main light source.

Assignees

• Shimadzu Corp

Inventors

• Kadoya Akiyuki
• Tojo Koji

Classifications

• G02B6/4257

  having a supporting carrier or a mounting substrate or a mounting plate (G02B6/3648 takes precedence) · CPC title

• G01M11/088

  of optical fibres; Mechanical features associated with the optical testing of optical fibres · CPC title

• G02B6/42

  Coupling light guides with opto-electronic elements · CPC title

• G02B6/4286 Primary

  Optical modules with optical power monitoring · CPC title

• G02B6/3895

  identification of connection, e.g. right plug to the right socket or full engagement of the mating parts (keying element on the plug or adapter G02B6/3831; keying element on the ferrule G02B6/3851; keying element for electrical connection H01R13/64) · CPC title