Variable attenuation of free-space light beams

G - Physics – 02 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G02B 6/26 (2006.01) G02B 6/35 (2006.01) G02B 26/08 (2006.01)

Patent

CA 2401563

One aspect is a method for controllably attenuating the beam of light (108) coupled between incoming and outgoing optical fibers (106) by misaligning mirror surfaces (116a, 116b) included of an optical switching module (100). Misalignment of the mirror surfaces (116a and 116b) causes only a portion of the beam of light (108) propagating along the incoming optical fiber (106), which is less than when the light beam deflectors' mirror surfaces (116) are precisely aligned, to propagate along the outgoing optical fiber (108). Thus, the optical switching module (100) controllably attenuates the beam of light (108) coupled between the incoming and the outgoing optical fibers (106). Another aspect is a variable-optical-attenuator ("VOA") (212) that includes an optically reflective membrane (222) upon which the beam of light (108) impinges. Application of an electrostatic field between an adjacent electrode (228) and the membrane (222) deforms the membrane (222) thereby attenuating an impinging beam of light (108).

Un aspect de l'invention concerne un procédé servant à atténuer de façon contrôlée le faisceau de lumière (108) couplé entre des fibres optiques d'arrivée et de sortie (106) par décalage de l'alignement de surfaces miroirs (116a, 116b) faisant partie d'un module de commutation optique (100). Le décalage de l'alignement des surfaces miroirs (116a, 116b) ne provoque la propagation que d'une partie du faisceau de lumière (108) le long de la fibre optique d'entrée (106), qui est inférieure au moment de l'alignement précis des surfaces miroirs (116) des déflecteurs de faisceaux lumineux, afin de se propager le long de la fibre optique de sortie (108). De ce fait, le module de commutation optique (100) atténue de façon contrôlée le faisceau de lumière (108) couplé entre les fibres optiques d'entrée et de sortie (106). Un autre aspect de l'invention consiste en un atténuateur optique variable ("VOA") (212) comprenant une membrane réfléchissante (222) que vient frapper le faisceau de lumière (108). L'application d'un champ électrostatique entre une électrode contiguë (228) et la membrane (222) déforme cette dernière, ce qui atténue le faisceau de lumière (108) venant frapper la membrane.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Variable attenuation of free-space light beams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable attenuation of free-space light beams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable attenuation of free-space light beams will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1495577

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.