Optical link

Details Optical link Optical link

1991-02-11

1994-02-15

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359160, H04B 1000

Patent

active

052872122

ABSTRACT:
An optical link exhibiting net gain without the use of optical or electronic amplifiers. The link includes a high-power laser, a high-sensitivity external modulator for intensity modulating the laser output, an optical fiber, and photodiode detector. The electrical input port of the external modulator is impedance-matched to the output port of an electrical signal source using a transformer double-tuned circuit. The link exhibits electrical transfer efficiency (i.e., gain) proportional to the square of the optical bias power and modulator sensitivity, and much lower insertion loss than prior art links. The link can be advantageously used wherever low-insertion loss, high bandwidth, and low distortion transmission of electrical signals is required over distances up to ten kilometers.

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