HP 86037B Instruction Manual page 194

Table 8-1. Chromatic Dispersion Measurement Specifications (Continued)
Measurement
Optical power range for RECEIVER INPUT
Modulation frequency range
Dispersion measurement range
d
Group delay uncertainty
Zero dispersion wavelength repeatability
Repeatability of dispersion slope at zero dispersion
e
wavelength
Zero dispersion wavelength accuracy
with wavelength meter (With HP 8168F)
without wavelength meter (With HP 8168F)
without wavelength meter (With HP 8168D)
Relative amplitude accuracy
Measurement time (characteristic)
with wavelength meter
without wavelength meter
a. Refer to power specification for tunable laser source for other wavelength ranges.
b. System dynamic range is calculated by subtracting the test set loss and receiver sensitivity from the tunable laser source's output power.
c. Maximum dispersion, Dmax (in ns/nm), is given by 25/Dl, where Dl is the wavelength step size in nm.
d. Based on noise floor measurements, full output power, reference wavelength on, no averaging, and high substitute
e. One standard deviation for 20 measurements on the same spool of 10 km dispersion-shifted fiber for the wavelength range from 1515 to
1580 nm with power into RECEIVER INPUT at -43 dBm (optical). Parameters refer to curve fit traces using the five-term Sellmeier fit.
f. These values are based on measurements of NIST Standard Reference Material 2524, Serial No. 0001, using a quadratic fit to 65 point
spaced at 1 nm.
g. This calculation was done for 65 points on a standard spool of 10 km fiber using normal sensitivity. Any change of sensitivity will result in
a corresponding change in time. As an example, 10 runs of standard fiber with 65 points per run takes about one hour.
Specifications and Regulatory Information
Specifications
e
f
g
8-4
Specification
–3 to –43 dBm (optical)
100 MHz to 2.5 GHz
0.1 ps/nm to D max
c
0.5 ps (0.05 ps characteristic)
0.05 nm (0.005 nm characteristic)
0.002 ps/(nm2 × km) (characteristic)
±0.05 nm
±0.15 nm
±0.25 nm
±0.25 dB (characteristic)
3 seconds per point
2 seconds per point