Optical multiport element with an acousto-optical modulator

Abstract

Abstract The element has an acousto-optical modulator (AOM), which has at one end at least two optical fibre terminals, in particular monomode optical fibres, whose end faces are arranged in the focal plane of a lens located between the optical fibres and the acousto-optical modulator. In order to obtain an easily adjustable and attenuation-limited embodiment in conjunction with a short overall length, it is provided that the optical axis of a single lens (2, 3, 31) at at least one end of the AOM (1) is lined up with the transit axis of the AOM (1), and that the optical fibres (4 to 6, 18 to 20 or 27, 28) are axially parallel with one another and are arranged outside the optical axis of the lens (2, 3, 31) in such a way that parallel-focused beams (14 to 17) leading from the lens (2, 3, 31) to the AOM (1) are directed at the Bragg angle to the optical axis onto the active region of the AOM (1). <IMAGE>

Inventors

• 👤 Ernst Prof.Dr. Brinkmeyer
• 👤 Wolfgang Brennecke
• 👤 Manfred Dr. Fuchs
• 👤 Michael Dargatz

Bibliographic Details