122
Tunable Laser Sources
How to Modulate a Signal
Measurement System. For information on external digital
modulation, see “External Digital Modulation” on page 118.
C AU T I O N
A maximum of 5 V can be applied as an external voltage to the Input Trigger
connector, see page 152.
Take care not to use the Trigger Output connector or the Remote Interlock
connector for modulation. Do not apply an external voltage to these
connectors.
N OT E
If external digital modulation using the Input Trigger Connector,
<B
ACKPLANE
>, is chosen as the modulation source, [M
OD
S
RC
], the
HP 81689A Tunable Laser module behaves differently from all other
modules. If the duty cycle varies:
• the average power of the output signal of the HP 81689A Tunable
Laser module varies in proportion with the change in duty cycle,
while,
• the power of the output signal of all other modules adjusts so that
the average power of the output signal is always 50% of the set power.
To enable external digital modulation using the Input Trigger
Connector:
1
Move to the Tunable Laser channel and press [Details].
2
Move to [M
OD
S
RC
] and press E
NTER
.
3
Move to <B
ACKPLANE
>, by using the cursor key, and press
E
NTER
. The text
Back
appears in the Tunable Laser channel.
How to Increase Linewidth
You can use coherence control to increase the linewidth of the
optical signal output from your Tunable Laser module.
Enabling the coherence control increases the linewidth of the
optical output signal to between 50 and 500 MHz (typically).
Содержание 8163A Series
Страница 1: ...HP 8163A Lightwave Multimeter HP 8164A Lightwave Measurement System User s Guide ...
Страница 3: ...HP 8163A Lightwave Multimeter HP 8164A Lightwave Measurement System User s Guide ...
Страница 13: ...13 Safety Summary ...
Страница 25: ...1 1 Getting Started ...
Страница 40: ...40 Getting Started A Description of the User Interface Figure 1 13 The HP 8163A System Configuration Menu ...
Страница 49: ...2 2 Additional Features ...
Страница 61: ...3 3 Power Measurement ...
Страница 76: ...76 Power Measurement How to Measure Power Figure 3 8 Manual Range Mode Within Range ...
Страница 87: ...4 4 Laser Sources ...
Страница 94: ...94 Using Laser Source Modules How to Use Laser Source Modules ...
Страница 95: ...5 5 Tunable Lasers ...
Страница 99: ...99 Tunable Laser Sources How to Set the Power Figure 5 1 Setting High Power parameters ...
Страница 103: ...103 Tunable Laser Sources How to Set the Power Figure 5 3 Setting Attenuation ...
Страница 113: ...113 Tunable Laser Sources How to Perform a Wavelength Sweep Figure 5 10 Executing a Stepped Sweep ...
Страница 130: ...130 Tunable Laser Sources How to Use Auxiliary Functions ...
Страница 131: ...A A Installation and Maintenance ...
Страница 159: ...B B Accessories ...
Страница 167: ...C C Specifications ...
Страница 175: ...D D Performance Tests ...
Страница 188: ...188 Performance Tests Test Record ...
Страница 192: ...192 Performance Tests Test Record ...
Страница 193: ...E E Cleaning Procedures ...
Страница 199: ...F F Firmware Updates ...
Страница 204: ...204 F Firmware Updates Firmware Update Process ...