How Power Varies with Wavelength

VISA Programming Examples

/* read the default power from the tunable laser source */ errStatus = viQueryf(vi,"SOURCE2:POW? DEF\n","%s",replyBuf); checkError(vi,errStatus);

/* set the default power */

errStatus = viPrintf(vi,"SOURCE2:POW %s\n",replyBuf); checkError(vi,errStatus);

/* turn auto range on*/

errStatus = viPrintf(vi,"SENS1:CHAN1:POW:RANGE:AUTO 1\n"); checkError(vi,errStatus);

/*set the averaging time for measuring to 20ms*/ errStatus = viPrintf(vi,"SENS1:CHAN1:POW:ATIME 0.02\n"); checkError(vi,errStatus);

/* turn laser on */

errStatus = viPrintf(vi,"SOURCE2:POW:STATE 1\n"); checkError(vi,errStatus);

/* increase the wavelength of the tunable laser source 10 nm until the maximum is reached.

read the results from the power meter and display it */

for(i=1;1;i++)

{

/*query the power */

errStatus = viQueryf(vi,"READ1:CHAN1:POW?\n","%s",replyBuf); checkError(vi,errStatus);

/* display the power read from power meter and wavelength */ printf("#%02d power:%s

wavelength:%g\n",i,replyBuf,wavelength);

/* increase the wavelength */ wavelength += 10.0e- 9; if(wavelength > wavelength_max) break; /*set the new wavelength*/

errStatus = viPrintf(vi,"SOURCE2:WAV %g\n",wavelength);

/*

poll the instrument for completion of this command because adjusting a new wavelength takes some time

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition

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8163A, 8164A, 8166A, B specifications

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