System and method for brillouin scattering induced transparency

1. A system comprising:

a resonator shaped to include two optical modes that are distinct in both frequency and momentum and an acoustic mode at a frequency and momentum matching a difference between the two optical modes;

a control laser to create a control laser signal in one of the two optical modes of the resonator;

a probe laser to create a probe laser signal in another of the two optical modes of the resonator;

an optical coupler to provide an interface of the control laser signal and the probe laser signal with the two optical modes of the resonator; and

where a coherent interaction between the two optical modes and the acoustic mode modifies an amplitude or a phase of light in the optical coupler depending on a direction of propagation of the control laser signal or the probe laser signal, or both the control laser signal and the probe laser signal.

2. The system of claim 1 , where the resonator comprises a silica micro-resonator including a naturally occurring, forward-stimulated Brillouin scattering phase-matching modal configuration.

3. The system of claim 2 , where the transparency is non-reciprocal.

4. The system of claim 1 , where the transparency includes compact and ultralow power slow and fast light generation.

5. The system of claim 1 , where the transparency comprises at least one of optical switching, optical isolator, optical circulators, and gyroscopes.

6. The system of claim 1 , where the transparency does not employ an external magnetic field.

7. The system of claim 1 , where the transparency is tuned using the control laser.

8. The system of claim 1 , where the transparency comprises Brillouin scattering.

9. The system of claim 1 , where a geometric shape of the resonator comprises at least one of a spheroid, a disk, a ring, a toroid, a shell and a balloon.

10. The system of claim 1 , where the transparency is induced by anti-Stokes loss plus resonator loss.

11. The system of claim 1 , where the control laser and the probe laser comprise a same laser.

12. The system of claim 1 , where the coherent interaction between the two optical modes and the acoustic mode creates a transparency in one direction and maintains opacity in an opposite direction.

13. The system of claim 1 , where the optical coupler comprises a waveguide.

14. A system comprising:

a silica micro-resonator shaped to include two optical modes that are separated in both frequency and momentum and an acoustic mode at a frequency and momentum matching a difference between the two optical modes;

the silica micro-resonator including a naturally occurring, forward-stimulated Brillouin scattering phase-matching modal configuration; and

the silica micro-resonator configured to induce a Brillouin scattering induced transparency generated by an acousto-optic interaction of light with long-lived propagating phonons, the silica micro-resonator configured to provide phase-matching so that the Brillouin scattering induced transparency is non-reciprocal.

15. The system of claim 14 , where the Brillouin scattering induced transparency includes compact and ultralow power slow and fast light generation.

16. The system of claim 14 , where the Brillouin scattering induced transparency comprises at least one of optical switching, optical isolator, optical circulators, and gyroscopes.

17. The system of claim 14 , where the Brillouin scattering induced transparency does not employ an external magnetic field.

18. The system of claim 14 , where the Brillouin scattering induced transparency is tuned using a control laser.

19. The system of claim 14 , where the acousto-optic interaction comprises a control laser signal, a probe laser signal and an acoustic signal.

20. The system of claim 19 , where the acoustic signal provides a coherent interaction between the control laser signal and the probe laser signal.