Patent ID: 6163554
Filing Date: 2000-12-19
Classification: H01S

Abstract:
An optical fiber Raman laser comprising:an optical fiber which is a nonlinear optical medium, for implementing a nonlinear Stokes frequency shift;wavelength-division multiplexing (WDM) optical fiber coupler means, coupled to said optical fiber in parallel, for separating each Stokes frequency shifted wavelength and a pump wavelength, for internally resonating the Stokes frequency shifted light wavelengths and for output-coupling said laser output light which is a second order Stokes frequency shifted wavelength;first fiber Bragg grating means connected to said WDM optical fiber coupler means in serial, for transmitting light of the pump source and for selecting an output wavelength of the Raman laser; andsecond fiber Bragg grating means connected to said WDM optical fiber coupler means, which has maximum reflectivity on the wavelength of the pump source, for full-reflecting and re-inputting the light of the pump source to said optical fiber.