5-1
IM 703753-01E
Specifications
5
Chapter 5 Specifications
5.1
Basic Specifications
Item
Characteristics
Notes
Wavelength
Wavelength
1527 to 1567 nm (FB200C)
C band model
measurement range 1568 to 1607 nm (FB200L)
L band model
Wavelength
1 pm
display resolution
Relative wavelength
±
10 pm or less
Temperature fluctuation
deviation
10
°
C/6 h or less
Wavelength
±
5 pm or less.
3
σ
value under the same
repeatability
conditions (
σ
: standard deviation).
3 pm p-p typ. within 10 dB from
the upper limit of each range.*
Wavelength
±
50 pm or less.
accuracy
Optical power
Measurement
4 ranges
Recommended power range of each range.
power range
(switched by a command) The value inside the parentheses is for the
(0.1 nm width)
case when averaging is not performed.
–5 dBm range: Low sensitivity
–5 dBm range: –5 to –35 dBm (–25 dBm)
–15 dBm range: Low sensitivity –15 dBm range: –15 to –45 dBm (–35 dBm)
–25 dBm range: High sensitivity –25 dBm range: –25 to –55 dBm (–45 dBm)
–35 dBm range: High sensitivity –35 dBm range: –35 to –65 dBm (–50 dBm)
Power display
0.01 dBm (minimum)
resolution
Minimum detection –60 dBm or less
0.1 nm width
power
(–70 dBm typ.)
Maximum optical
±
16 dBm (40 mW) or less
Total power of all spectra
power
Measurement characteristics
Number of
About 40
When FBGs are used at 1 nm
measurable FBGs
spacing between FWHM and 0.25
nm.
FBG spacing
Approx. 1.0 nm
Smaller spacing is possible, but
should be twice FWHM
Measurement
10 ms (100 Hz) minimum
Selectable range
interval
10 ms to 990 ms (in 10 ms steps),
1 s to 360 s
Example of conditions when
measuring at 10 ms intervals.
Low sensitivity range, the number
of FBGs: up to 16 for 921.6 kbps
The number of FBGs is
approximately 3 for 115.2 kbps.
Output data
Wavelength and power level
The center wavelength of the
(output as numerical data)
reflection spectrum of FBG is
output for the wavelength.
The spectrum density calculated at
a slit width of 0.1 nm near the
center of the spectrum is output for
the optical power level.
Interface
Host I/F connector
FCN-705Q030-AU/M by Fujitsu Components Limited
Interface
Conforms to RS-422.
Alarm
Outputs CPU alarm and other alarms using open collector signal
Warm-up time
30 min
*
Typical value represents a typical or average value. It is not strictly warranted.
Note The optical fiber used for testing is SM10/125 PC.
The specifications of the FBG used for testing are as follows: FWHM (Full Width Half Maximum): 0.25 to 0.6
nm, reflection ratio: 85% or more, SMSR (Side Mode Suppression Ratio): 10 dB or more, and flat-top type.