Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Transmission wavelength characteristics variable optical element, and wavelength characteristics variable apparatus, optical amplifier, and optical transmission system, using same










Image Number 17 for United States Patent #7016096.

An object of the invention is to easily realize an optical element using an etalon type structure, capable of changing a periodic transmission wavelength characteristic in an axial direction of transmissivity, and also capable of changing a periodic characteristic with respect to wavelength. To this end, a transmission wavelength characteristics variable optical element according to the invention comprises: a light interference section including a pair of wedge shape magneto-optic crystals arranged with taper faces thereof in close contact, that can change a distance between reflecting films formed on parallel planes of the magneto-optic crystals, by relatively moving the magneto-optic crystals by movable sections, permanent magnets for applying a fixed magnet field to the pair of magneto-optic crystals, an electromagnet for applying a variable magnetic field in a direction different to the fixed magnetic field, and a variable current source controlling the current flowing into the electromagnet.








 
 
  Recently Added Patents
Self assembly of elements for displays
Economic filtering system for delivery of permission based, targeted, incentivized advertising
Fuser member
Process information structuring support method
Driver circuit for driving semiconductor switches
Gaze tracking password input method and device utilizing the same
Therapeutic vitamin D sun-protecting formulations and methods for their use
  Randomly Featured Patents
Soil penetrating applicator and method
Scheduling and admission control policy for a continuous media server
Tire dynamic imbalance screening system
System for steering rear wheels of a motor vehicle
Lottery ticket scraper enabling precise removal of surface layer from ticket
Distributed splitter for data transmission over twisted wire pairs
Circuit and method for trimming integrated circuits
Broadband communication systems and methods using low and high bandwidth request and broadcast links
Recording medium drive including electrostatic actuator between head slider and recording medium
Golf club head with improved mass distribution