Appeal No. 96-4083
Application 08/268,039
A common connection means 3 connects the outputs of the semi-
conductor laser diode 1 in the optical modulator 2 and the
input of impedance means 8. The resistor means operates as a
resistor at least at a high frequency. Thus, the impedance of
the path via the laser diode 1 becomes relatively large.
Consequently, the high frequency signal at the common connec-
tion means 3 due to the drive signal
is more easily conveyed to ground via the impedance means 8.
Therefore, the influence of the drive signal to the semicon-
ductor laser diode 1 can be reduced, thereby producing light
with a stable wavelength.
Appellants disclose on page 13 of the specification
that Figure 8 shows a configuration of an optical semiconduc-
tor device circuit according to the second aspect of the
present invention. On page 14 of the specification, Appel-
lants disclose that Figure 8 shows a bypass capacitor 9 con-
nected in parallel with the semiconductor laser diode 1. As
described above, the high frequency signal at the common
connection means 3 due to the drive signal is conveyed to
3
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Last modified: November 3, 2007