Title: Apparatus for generating light pulse train

Abstract: The ends of a length of optical fiber are coupled to each other to form a closed loop so that light wave may propagate freely through the looped optical fiber. At one or more portions of the looped path of light are provided the sections through which the loop is optically coupled to external equipments. A light pulse is injected through the sections into the loop fiber and a part of it is taken out through the sections each time it completes a cycle of travel through the loop fiber, so that a light pulse train with pulses equidistantly appearing on the time base can be obtained.

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Inventors: Suzaki, Yasuzi (Yokohama, JP)

Application Number: 635112
Filing Date: 1975-11-25
Publication_date: 1979-01-30
Assignee: Hitachi, Ltd. (JP)
Primary Class(es): 385/30 359/900, 372/6, 372/108, 385/24, 385/42, 385/51
Other Classes:
US Patent Ref:

3558213	Jan, 1971	Marcatili	350/96.
3589794	Jun, 1971	Marcatili	350/96.
3760297	Sep, 1973	Thompson	350/96.
3849740	Nov, 1974	Brandt	350/96.

Other Refs:
Primary Examiner: Corbin, John K.
Assistant Examiner: Hille, Rolf
Attorney: Craig & Antonelli