jsh-42l3ad3-5 JDS Uniphase Corporation, jsh-42l3ad3-5 Datasheet - Page 12

• Manufacturer Part Number: jsh-42l3ad3-5
• Description: Sfp Pluggable 4/2/1g Fc/gbe Fp And Dfb Transceiver Rohs 6/6 Jsh-42l3ad3-5, Jsh-42l3ad3-5g, Jsh-42l3ad3-20
• Manufacturer: JDS Uniphase Corporation

12
Optical Receiver
Parameter
Operating wavelength
Return loss of receiver
OMA operational range - 4.25 Gb/s
OMA operational range - 2.125 Gb/s
OMA operational range - 1.0625 Gb/s
Rx_LOS assert level
Rx_LOS de-assert (negate) Level
Rx_LOS hysteresis
Receiver electrical 3 dB upper cutoff frequency
1. The minimum and maximum values of the average received power in dBm give the input power range to maintain a BER < 10
2. Optical Modulation Amplitude (OMA) is defined as the difference in optical power between a logic level one and a logic level zero. The Optical Modulation Amplitude is
3. The Rx_LOS has hysteresis to minimize “chatter” on the output line. In principle, hysteresis alone does not guarantee chatter-free operation. The transceiver, however, presents
Optical Transmitter
Parameter
Spectral center wavelength (JSH-42L3AD3-5)
Spectral center wavelength (JSH-42L3AD3-20)
Spectral width (JSH-42L3AD3-5)
Spectral width (JSH-42L3AD3-20)
Side mode supression ratio (JSH-42L3AD3-20)
Launched optical power
Extinction ratio
Optical rise/fall time
Optical modulation amplitude (JSH-42L3AD3-5)
Optical modulation amplitude (JSH-42L3AD3-20)
Relative intensity noise
1. Launched optical power is measured at the end of a two meter section of a singlemode fiber. The maximum and minimum of the allowed range of average transmitter power
2. Optical transition time is the time interval required for the rising or falling edge of an optical pulse to transition between the 20% and 80% amplitudes relative to the logical 1
3. Optical Modulation Amplitude (OMA) is defined as the difference in optical power between a logic level one and a logic level zero. The Optical Modulation Amplitude is de-
4. RIN
receiver eye. These values take into account power penalties caused by the use of a laser transmitter with a worst-case combination of spectral width, extinction ratio and pulse
shape characteristics.
defined in terms of average optical power (P
average optical power (in mW) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case
reflections, must be the absolute (unit less linear) ratio and not expressed in dB. For example, the specified OMA at 4.25 Gb/s is equivalent to an average power of -17.3 dBm
at an ER of 9 dB. At 1.0625 Gb/s and 2.125 Gb/s, the specified OMA is equivalent to an average power of -20.2 dBm at an ER of 9 dB. Typical values below the minimum
specification indicate margin beyond the specification.
an Rx_LOS line without chatter, where chatter is defined as a transient response having a voltage level of greater than 0.5 volts (in the case of going from the negate level to the
assert level) and of any duration that can be sensed by the host logic.
coupled into the fiber are worst case values to account for manufacturing variances, drift due to temperature variations, and aging effects. The minimum launched optical
power specified assumes an infinite extinction ratio at the minimum specified OMA.
and 0 levels. This is measured through a 4th order Bessel -Thompson filter with 0.75 * Data Rate 3-dB bandwidth and corrected to the full bandwidth value.
fined in terms of average optical power (P
average optical power (in mW) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case
reflections, must be the absolute (unit less linear) ratio and not expressed in dB. The specified Optical Modulation Amplitude is equivalent to an average power of -7.3 dBm at
an extinction ratio of 9 dB.
12
is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12dB return loss. See ANSI Fibre Channel Specification Annex A.5.
3
3
2
4
1
3
AVG
AVG
1, 2
in mW) and extinction ratio (ER) as given by OMA=2P
1, 2
in mW) and extinction ratio (ER) as given by OMA=2P
1, 2
SFP PlUGGABlE 4/2/1G FC/GBE FP AND DFB TRANSCEIvER ROHS 6/6
3
3
Symbol
λ
RL
OMA
OMA
OMA
P
P
BW
off
on
Symbol
λ
λ
∆λ
∆λ
SMSR
PT
ER
T
OMA
OMA
RIN
C
C
Rx
rise
op
op
op
/T
12
fall
Min
1270
12
29
15
15
-30
0.5
Min
1285
1300
30
-8.4
190
290
AVG
AVG
((ER-1)/(ER+1)). In this expression, the extinction ratio, the ratio of the
((ER-1)/(ER+1)). The extinction ratio, defined as the ratio of the
Typical
10
6
6
2
Typical
6
-12
when the data is sampled in the center of the
Max.
1365
2000
2000
2000
-20
-20.5
5
5000
Max.
1350
1325
2.0
0.2
-1.0
90
-118
Unit
nm
dB
mW (pk-pk)
mW (pk-pk)
mW (pk-pk)
dBm (avg)
dBm (avg)
dB (optical)
MHz
Unit
nm
nm
nm (rms)
nm (rms)
dB
dBm (avg)
dB
ps
mW (pk-pk)
mW (pk-pk)
dB/Hz