Patent ID: 8447155
Filing Date: 2013-05-21
Classification: G02B,G02F

Abstract:
1. An optical device for generating a frequency comb comprising: an optical source including at least two input optical waves characterized by a first input frequency and a second input frequency, respectively, wherein the first input frequency and the second input frequency are separated by a frequency spacing; a first waveguide comprising a nonlinear optical medium characterized by a nonlinear optical response and operable to mix the at least two input optical waves to generate a plurality of first optical waves characterized by respective first frequencies separated from each other by the frequency spacing and characterized by a frequency chirp; a second waveguide concatenated to the first waveguide, wherein the second waveguide is characterized by a first dispersion characteristics such that the second waveguide is operable to compress the waveforms of the plurality of first optical waves and to reduce the frequency chirp introduced by the first waveguide; and a third waveguide concatenated to the second waveguide, wherein the third waveguide comprises a nonlinear optical medium and is operable to mix the plurality of first optical waves to generate a plurality of second optical waves characterized by respective second frequencies separated from each other by the frequency spacing, and wherein the third waveguide is characterized by a second dispersion characteristics such that the third waveguide is operable to increase a total number of second optical waves with respect to a total number of first optical waves.