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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005 F i n i s a r
Finisar Corporation PRELIMINARY and Confidential Page 6
Rev C, February 2005
V. Optical Parameters
Parameter
Symbol Min Typ Max Units Notes/Conditions
TRANSMITTER CHARACTERISTICS
Center Wavelength Spacing 100 GHz Corresponds to
approximately 0.8 nm
Spectral Width
∆λ
20
0.2 0.3 nm Full width, -20dB from
max
Transmitter Center Wavelength –
End of Life
λ
c
X - 100
X X + 100
pm X = specified center
wavelength
Transmitter Center Wavelength –
Start of Life
λ
c
Y - 25
Y Y + 25
pm Y = X – 60pm
Side Mode Suppression Ratio
(SMSR)
SMSR 30 dB Modulated
Optical Rise/Fall Time t
r
/ t
f
200 ps Unfiltered, 80% -20%
Transmitter Optical Output Power P
out
0 +4 dBm Average power coupled
into single mode fiber
Transmitter Extinction Ratio OMI 9.0 dB
Transmitter Eye Opening 40 % IEEE 802.3 and Fibre
Channel Eye Mask
Margin
Relative Intensity Noise RIN -120 dB/Hz
Dispersion Penalty at 180km 3.0 dB 3600ps/nm. See Note 3.
RECEIVER CHARACTERISTICS
Optical Input Wavelength P
in
1520 1570 nm
Receiver Jitter Generation 100 ps Peak to peak, -25 dBm
Rx power
Optical Input Power
(BER < 10
-9
)
P
in
-32 -9 dBm 1.25 Gb/s w/
PRBS 2
7
-1
Optical Input Power
(BER < 10
-12
)
P
in
-30 -9 dBm 1.25 Gb/s w/
PRBS 2
7
-1
Optical Input Power –
Receiver Damage Threshold
6 dBm
Receiver Reflectance R
RX
-27 dB
OSNR Limit OSNR
min
20 dB
OSNR Penalty 2.0 dB For OSNR = OSNR
min.
See Note 4.
Notes:
1. Parameters are specified over temperature and voltage, at end of life unless otherwise noted.
2. All parameters are measured on a Finisar SFP Evaluation Card unless otherwise noted.
3. Dispersion penalty is measured in loop back with OSNR set at Rx < 28 dB. Data rate and pattern used same
as specified for Optical Input Power. Dispersion penalty is measured at BER = 10
-10
4.
OSNR penalty is measured in loop back. Data rate and pattern used is same as specified for Optical Input
Power. OSNR penalty is measured at BER = 10
-10