WIDELY WAVELENGTH TUNABLE LASER MODULE BASED ON A FLEXIBLE POLYMER WAVEGUIDE WITH A BRAGG REFLECTION GRATING AND A APPARATUS COMPRISING THE TUNABLE LASER MODULE

摘要

PURPOSE: An apparatus for forming of coil in a speaker is provided to change the wavelength in a wide area by using an excellent flexibility and elasticity of a polymer. CONSTITUTION: A wavelength variable filter(10) includes a brag reflector(1) and a polymer optical waveguide(2). An optical fiber(30) outputs laser from one terminal of the wavelength variable filter. A moving block is formed on the top of a holder. A control screw is installed in one side of the holder. The control screw moves the moving block to left and right by applying pressure to one side of the moving block.