Contact

LASER COMPONENTS GmbH
Werner-von-Siemens-Str. 15
82140 Olching / Germany

Phone: +49 (0)8142 / 28 64-0
Fax: +49 (0)8142 / 28 64-11

E-Mail:info@lasercomponents.com

Please contact us. We are glad to help!

(Fields with an * are required)
Contacting:
Drucken
  • English
  • Deutsch
  • Français

Company Newsletter

Reading our company newsletter, Photonics News, keeps you up to date. All technological and product news, as well as current information about LASER COMPONENTS, is available in concentrated form.

Subscribe today – for free!

High Directivity Optical Fiber Coupler from SEDI

Crosstalk Undesired


D61-011

SEDI has developed a so-called “high directivity (HD) coupler” especially for sensor applications. Crosstalk between port 1 and port 2 is referred to as directivity (see figure: red arrow). These products make it possible to couple a light source into port 1 (blue arrow) and collect the reflected signal in port 2 (green arrow). Here it is important that the crosstalk signal (red) not interfere with the signal being returned (green).

The established technology from SEDI, which is based on lateral polishing of the fibers, was optimized for relevant coupler parameters:

Directivity: The light reflected from the coupler must be minimal so as not to interfere with the measurement signal. The sources of interference are kept as small as possible. This includes assembly and packaging of the connectors.

Forward and Return Configuration: The design of these couplers is particularly well suited for sensor applications such as in refractometers or OTDRs in which the entire insertion loss plays a crucial role. For this reason the input of the coupler is marked. This input features a very low insertion loss.

One additional point in development is that a photodiode is integrated into the coupler to monitor the signal in operation!


Datasheet:

Further product information:
Fiber Optical Couplers

Manufacturer:
SEDI-ATI Fibres Optiques

HD Coupler

High Directivity Optical Fiber Coupler - a Sketch

Subscribe to Photonics News

Would you like to receive regular updates and information on our products and services? Subscribe here for our free Photonics News Newsletter and stay up to date.

Subscribe now

Your contact person

Claudia Michalke

+49 (0) 8142 2864-85

c.michalke@lasercomponents.com