1. An optical system for communicating optical signals to and from a subscriber unit, comprises: a first set of selected wavelengths; a second set of selected wavelengths offset from the first set of selected wavelengths; a first subsystem configured to transmit to the subscriber unit, the optical signals of one or more wavelengths from the first set of selected wavelengths over an optical fiber; a second subsystem configured to transmit to the subscriber unit the optical signals of one wavelength selected from the second set of selected wavelengths in statistical time division multiplexing over the optical fiber; a third subsystem at the subscriber unit configured to receive the optical signals of the one or more wavelengths from the first set of selected wavelengths and the optical signals of one wavelength from the second set of selected wavelengths over the optical fiber; a fourth subsystem at a head-end configured to receive looped back optical signals of one wavelength from the second set of selected wavelengths from the subscriber unit to the head-end over the optical fiber; a cyclic arrayed waveguide grating router capable of routing more than one wavelength to the subscriber unit; and a phase modulator, an intensity modulator, an amplifier and a looped back configuration within the subscriber unit.
1. An optical system for communicating optical signals to and from a subscriber unit, comprises: a first set of selected wavelengths; a second set of selected wavelengths offset from the first set of selected wavelengths; a first subsystem configured to transmit to the subscriber unit, the optical signals of one or more wavelengths from the first set of selected wavelengths over an optical fiber; a second subsystem configured to transmit to the subscriber unit the optical signals of one wavelength selected from the second set of selected wavelengths in statistical time division multiplexing over the optical fiber; a third subsystem at the subscriber unit configured to receive the optical signals of the one or more wavelengths from the first set of selected wavelengths and the optical signals of one wavelength from the second set of selected wavelengths over the optical fiber; a fourth subsystem at a head-end configured to receive looped back optical signals of one wavelength from the second set of selected wavelengths from the subscriber unit to the head-end over the optical fiber; a cyclic arrayed waveguide grating router capable of routing more than one wavelength to the subscriber unit; and a phase modulator, an intensity modulator, an amplifier and a looped back configuration within the subscriber unit. 20. An optical system as in claim 1 , wherein the subscriber unit further comprises a circulator for looping back the optical signals of one wavelength of the second set of wavelengths, after optically processing said looped back optical signals, in the subscriber unit.