Optical transmitter comprising a laser diode

Details Optical transmitter comprising a laser diode Optical transmitter comprising a laser diode

1992-02-11

1992-10-06

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

372 38, H04B 1004

Patent

active

051537656

ABSTRACT:
The described optical transmitter comprises a laser diode (2) and optically coupled thereto a photodiode (3) operating as a monitor diode. The photoelectric current of the monitor diode (3) is used for adjusting the light power of the laser diode (2). In addition, the optical transmitter includes modulators used for modulating the current of the laser diode (IL) by a useful signal (b.sub.n) and a pilot signal (B.sub.k). The device includes circuitry to control the laser diode, in response to the photodiode, so that jitter in the signal is avoided. The device is capable of operation with bit frequencies in the GHz range.

REFERENCES:
patent: 4504976 (1985-03-01), Yoshikawa et al.
patent: 4677632 (1987-06-01), Lisco et al.
patent: 4733398 (1988-03-01), Shibagaki et al.
patent: 4757193 (1988-07-01), Kollanyi
patent: 4903273 (1990-02-01), Bathe

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