Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-12-19
1994-06-28
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359125, 348 6, H04J 1400, H04B 1012
Patent
active
053252233
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 customer homes 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.
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Northern Telecom Limited
Pascal Leslie
Toyooka Yoshiharu
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