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Home Physics Multichannel Optical Rotary Joint

Multichannel Optical Rotary Joint

Description

Multi-channel optical rotary joint is intended for the non-contact transfer of the analog and digital signals from the rotating objects to the stationary and is the optical analog of the electric current-collecting device.

Specification:

number of optical channels * up to 20
insertion optical loss ** 3-10 dB
crosstalk less then - 60dB
channel bandwidth at less 300 Mb/s
optical signal amplitude modulation with rotating process less then 15%
rotational speed up to 200/s
temperature range -50°C to + 80°C
diameter 130 mm
overall length 180mm

* dictated by the user
** insertion loss is influenced by the type of light sources, detectors and fiber optic link

Innovative Aspect and Main Advantages

Designed for the non-contacting transferring broadband digital signals to and from rotating body. Compensation of the optical beams rotating is the basic principle of given connector.

Features

  • low signal losses;
  • easily and effectively screened from electrical noise and interference;
  • possibility of combining digital optical channel with analog or VHF channels at the expense of free region presence;
  • relatively easy to produce transformer;
  • compact
  • .

The design and size of connector frame is influenced by its application within a network and by environmental factors.

Areas of Application

Application of the connector include:

  • wide angle azimuth field of view scanning systems in visible and IR;
  • radar antenna equipment
  • different optical communication system for the sensor data signals coupling between members free to rotate with respect to each other.


Fig. 1


Fig. 2

Stage of Development

Prototype - laboratory tested.

Contact Details

Oleksandr VLASENKO
Organization: V. Lashkaryov Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine
Address: 41 Nauki Prospect, 03028 Kyiv, Ukraine
+(38044) 525-1260, Fax: +(38044) 525-8342
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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