14
Transmitter Optical Characteristics
AFCT-5943LZ / GZ: Tc = 0°C to +70°C, V
CC
= 3.1 V to 3.5 V)
AFCT-5943ALZ / AGZ: Tc = -40°C to +85°C, V
CC
= 3.1 V to 3.5 V)
Parameter Symbol Min. Typ. Max. Unit Reference
Output Optical Power 9 µm SMF P
OUT
-10 -6 -3 dBm 1
Center Wavelength
l
C
1260 1360 nm
Spectral Width - rms s 1 4 nm rms 2
Optical Rise Time t
r
40 100 ps 3
Optical Fall Time t
f
80 225 ps 3
Extinction Ratio E
R
8.2 12 dB
Output Optical Eye Compliant with eye mask Telcordia GR-253-GORE
Back Reection Sensitivity -8.5 dB 4
Jitter Generation
pk to pk 70 mUI 5
RMS 7 mUI 5
Parameter Symbol Min. Typ. Max. Unit Reference
Receiver Sensitivity P
IN
MIN -21.5 -19 dBm avg. 6
Receiver Overload P
IN
MAX -3 +1 dBm avg. 6
Input Operating Wavelength
l
1260 1570 nm
Signal Detect - Asserted P
A
-24 -19.5 dBm avg.
Signal Detect - Deasserted P
D
-35 -26.4 dBm avg.
Signal Detect - Hysteresis P
H
0.5 2.4 4 dB
Reectance -35 -27 dB
Notes:
1. The output power is coupled into a 1 m single-mode ber. Minimum output optical level is at end of life.
2. The relationship between FWHM and RMS values for spectral width can be derived from the assumption of a Gaussian shaped spectrum which
results in RMS = FWHM/2.35.
3. These are unltered 20 - 80% values.
4. This meets the “desired” requirement in SONET specication (GR253). The gure given is the allowable mismatch for 1 dB degradation in receiver
sensitivity.
5. For the jitter measurements, the device was driven with SONET OC-48C data pattern lled with a 2
23
-1 PRBS payload.
6. P
IN
represents the typical optical input sensitivity of the receiver. Minimum sensitivity (P
IN
MIN) and saturation (P
IN
MAX) levels for a 2
23
-1 PRBS with
72 ones and 72 zeros inserted. Over the range the receiver is guaranteed to provide output data with a Bit Error Rate better than or equal to
1 x 10
-10
. For multirate applications the sensitivity will meet the maximum SONET specication for OC48 across all datarates (-19 dBm).
Receiver Optical Characteristics
AFCT-5943LZ / GZ: Tc = 0°C to +70°C, V
CC
= 3.1 V to 3.5 V)
AFCT-5943ALZ / AGZ: Tc = -40°C to +85°C, V
CC
= 3.1 V to 3.5 V)