Resonator having optical feedback coupling

Details Resonator having optical feedback coupling Resonator having optical feedback coupling

1983-06-01

1986-01-28

Grimm, Siegfried H.

Oscillators

Electromechanical resonator

With optical, piezoelectric or acoustic coupling means

73773, 73778, 7386241, 7386259, 250205, 250227, 310 25, 331 65, 331156, G01L 110, H03B 530

Patent

active

045674515

ABSTRACT:
A resonator device comprises an elastic beam driven electrostatically at its natural frequency, or an harmonic thereof, by voltage pulses applied to an integral paddle member. The voltage pulses are derived from optical pulses fed via an optical fibre and reflected from the paddle member to a photodiode array. There is thus minimal coupling between the beam and the drive system. A positive feedback loop is provided in which light retroreflected from the paddle member is recaptured by the optical fibre and electronically detected, amplified and fed back in phase with the beam oscillations by modulating the optical pulses.

REFERENCES:
patent: 1962609 (1934-06-01), Nicolson
patent: 3019397 (1962-01-01), Cosby
patent: 3529470 (1970-09-01), Agar
patent: 3805190 (1974-04-01), Berlin et al.
patent: 4345482 (1982-08-01), Adolfsson et al.
Berry, "Silicon Reed Electromechanical Oscillator", IBM Technical Disclosure Bulletin, vol. 14, No. 4, Sep. 1971, p. 1235.

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