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The need for Optical Switching

High bit rate transmission must be matched by switching capacityOptical or Photonic switching can provide such capacity. . CURRENT64 kbits/sec for each subscriber (1 voice channel)Estimated aggregate switching capacity is 10 Gbits/sec. . PROJECTED155 Mbits/sec for each subscriber (Video data etc..)Estimated aggregate switching capacity is 15.5 Tbits/sec.

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The need for Optical Switching

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    2. The need for Optical Switching

    3. What is Optical Switching?

    4. Optical Switching Overview

    5. Switching In Optical Networks. Electronic switching

    6. Switching In Optical Networks. All-Optical switching

    7. Generic forms of Optical Switching

    8. Network Applications

    9. Protection Switching

    10. Optical Cross Connect

    11. Optical Add/Drop Multiplexing

    12. Optical Spectral Monitoring

    13. Optical Functions Required

    14. Parameters of an Optical Switch

    16. Space Division Switching

    17. Optical Switching Element Technologies

    19. Optomechanical

    20. MEMS Microscopic Mirror Optical Switch Array

    21. MEMS based Optical Switch

    22. Micro-Electro-Mechanical System (MEMS)

    23. 2D MEMS based Optical Switch Matrix

    24. 3D MEMS based Optical Switch Matrix

    25. Lucent LambdaRouter Optical Switch

    26. Liquid Crystal Switching

    28. Total Internal Reflection LC Switch

    29. Liquid crystal (Total internal Reflection)

    30. Electro-optic Response of TIR Switch

    31. Some Photos of the TIR LC Switch

    33. Ferroelectric Switch Previous work used nematic liquid crystals to control total internal reflection at a glass prism – liquid crystal interface. Nematic switches: Low loss, Low crosstalk level, Relatively slow , switching time is in the ms range Latest work investigates an all-optical switch using ferroelectric liquid crystal. The central element of the switch is a ferroelectric liquid crystal controllable half-waveplate.

    34. Operating Principle

    35. FLC Experimental Setup

    36. Basic Structure of the Switch

    37. Liquid Crystal

    38. Output Side of Experimental Setup

    39. Switching Speed Experimental Results

    40. Performance Comparison of LC Switches

    42. Indium Phosphide Switch

    43. Thermo-Optical

    44. Thermo-Optical Switch. Interferometric

    45. Gel/Oil Based

    46. Agilent Bubble Switch

    47. Electro-Optical

    48. Lithium Niobate Waveguide Switch

    49. Acousto-Optic

    50. Acousto-Optic Switch

    51. Semiconductor Optical Amplifiers (SOA)

    52. Comparison of Optical Switching Technologies

    53. Comparison of Optical Switching Technologies (Contd)

    54. Comparison of Optical Switching Technologies (Contd)

    56. Wavelength Division Switching

    57. Wavelength Division Switching

    59. Time Division Switching

    60. Time Division Switching Issues

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