High speed pulse train generator

Details High speed pulse train generator High speed pulse train generator

1983-08-26

1987-03-24

Lee, John

350 9616, G02B 626

Patent

active

046520791

ABSTRACT:
There is disclosed a high speed pulse train generator for generating a train of pulses having arbitrarily close spacing. The apparatus consists of a generator loop comprised of a fiber optic waveguide looped through a directional coupler with the output fiber serving as the input fiber for a similarly structured multiplexer loop. The lengths of the two loops are adjusted such that the time difference in the propagation times of light around the respective loops is small compared to the time of propagation around either loop. The times are adjusted to obtain any arbitrary spacing of the pulses in the output pulse train which is comprised of interleaved pulse trains resulting from each pulse input to the multiplexer loop. Also disclosed is a single loop embodiment for bidirectional data rate transformation and methods of using all the embodiments.

REFERENCES:
patent: 4136929 (1979-01-01), Suzaki
patent: 4261639 (1981-04-01), Kogelnik et al.
patent: 4315666 (1982-02-01), Hicks, Jr.
patent: 4529262 (1985-07-01), Ashkin et al.
L. F. Stokes, et al, "All-Single-Mode Fiber Resonator," Optics Letters, vol. 7, No. 6, Jun. 1982, pp. 288-290.

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