Fiber optic telephone loop network

Details Fiber optic telephone loop network Fiber optic telephone loop network

1993-01-28

1994-09-20

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359126, 359137, H04J 1400

Patent

active

053494571

ABSTRACT:
Novel fiber optic telephone loop networks are disclosed. In the networks, single mode fiber optics are used for feeder and distribution segments of the loop but multimode fiber optics are used for the drops. The use of the multimode fiber optics has permitted the use of less costly optoelectronic devices. Surface light emitting diodes are such economical but reliable parts. Fiber service terminals located near subscriber premises convert single mode operation to the multimode operation. The networks are relatively easy to install and upgrade and are very economically competitive with other known FTTC and FTTH schemes. In a further embodiment, the fiber service terminals have microprocessor control to reroute signals via redundant single mode connections to central switching office in the event of a fault in a single mode fibers.

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