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Title:
OPTICAL TRANSMISSION APPARATUS
Document Type and Number:
Japanese Patent JP2000252925
Kind Code:
A
Abstract:

To provide an optical transmission apparatus capable of stable trans mission of a less distorted optical signal.

When an optical (feedback) input obtained by feedback of an optical output of a laser diode LD1 in the optical transmission apparatus is amplified by an operational amplifier OP1 whose slew rate is reduced by a capacitor C1, the occurrence of ringing in the amplifier output is suppressed. The overshoot generated in the optical output is suppressed by a capacitor C2 which improves the balance of a feedback system. A driving signal is deformed by passing a low pass filter LPF1 to adjust the timing of logic inversion of a logic IC 2, thereby adjusting the distortion generated in the pulse width of the optical output to optimize it. Consequently, the less-distorted optical signal can be stably transmitted.


Inventors:
TOKURA TAKESHI
NIKAIDO SHINICHI
Application Number:
JP5120699A
Publication Date:
September 14, 2000
Filing Date:
February 26, 1999
Export Citation:
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Assignee:
FUJIKURA LTD
International Classes:
H03K17/78; H01S5/00; H01S5/0683; H04B10/07; H04B10/2507; H04B10/40; H04B10/50; H04B10/524; H04B10/564; H04B10/58; H04B10/60; (IPC1-7): H04B10/28; H01S5/0683; H03K17/78; H04B10/04; H04B10/06; H04B10/14; H04B10/26
Attorney, Agent or Firm:
Hidekazu Miyoshi (4 outside)