Self-aligning analog laser transmitter

Details Self-aligning analog laser transmitter Self-aligning analog laser transmitter

1989-06-26

1991-09-03

Kuntz, Curtis

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

H04B 1004

Patent

active

050461389

ABSTRACT:
Apparatus and a method are provided for aligning an analog laser transmitter. Operational characteristics of the laser are determined. These characteristics are used to derive the power level required of a communication signal to properly modulate the laser for communication across an optical fiber. The magnitude of an input communication signal is then adjusted to the derived level, and maintained at this level for proper modulation. The alignment is performed upon the replacement of laser components in the field. The alignment may also be periodically effected to compensate for normal degradation of laser components over time.

REFERENCES:
patent: 4008390 (1977-02-01), Runge
patent: 4009385 (1977-02-01), Sell
patent: 4369525 (1983-01-01), Breton
patent: 4399566 (1983-08-01), Roullet
patent: 4504976 (1985-03-01), Beaudet
patent: 4612671 (1986-09-01), Giles
patent: 4621282 (1986-11-01), Ahern
Smith, "Laser Level Control Circuit for High Bit Rate Systems Using a Slope Detector", Electronic Letters, 11-23-78, vol. 14, #24.

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