WRD-19020-1
15
7.2
Table of Specifications
Specifications
1
Performance
Notes
Wavelength Range
1528.773-1566.723nm
C-band
Reference Mode
Absolute Accuracy
±0.1pm
±0.1pm typical
Reference Lines
2
Other gas lines
Wavelength/ITU Mode
Absolute Accuracy
±1pm typical
1 hour
3
Allan Deviation (100 sec)
<1x10-9
Reference Mode
Laser Linewidth
<500 KHz typical
ITU Grid Resolution
100, 50, 25 GHz
ITU Mode
ITU Frequency Offset
0-50 GHz
Live
Operating Temperature
15-45 degC
Side Mode Suppression
>35 dB typical
RIN
<-140dB typical
Output Power
10 dBm typical
Power Stability
±0.015 dB typical
±0.025dB typical
1 hour
24 hours
FiberType, interface
PM Panda, SCAPC
Serial Interface
RS-232
SCPI Compliant
Power Requirements
90-250 VAC, 50/60 Hz, 0.5
amp
Universal AC socket
1.
Specifications reported at 25 ± 3 °C.
2.
R8 and P11 lines. See Section 7.1 for wavelengths.
3.
Within 1 hour of initial setting.
8
Additional Information
8.1
Applications
A typical application for the ClarityPlus laser is to provide an extremely accurate and stable wavelength
standard in the DWDM band. This can be used as a calibration source for an OSA (optical spectrum
analyzer) or to verify operation of a wavelength meter.
Most wavelength meters are actually frequency ratio meters which measure the wavelength of the
unknown signal as a ratio to the built-in standard. Generally, the built-in standard is a helium neon laser.
These lasers are available with absolute frequency accuracy nearly as accurate as the ClarityPlus but
the wavelength at 632nm is very far from the DWDM band. Vendors of wavelength meters have
developed correction algorithms to compensate for the difference of index of refraction of air and other
factors that might affect the transfer of this accuracy to the DWDM band by the wavelength meter. These
techniques all add a measure of uncertainty. The ClarityPlus provides a means to verify the correct
operation of a wavemeter up to its full capabilities with a signal in the DWDM band.
