3
DATA SHEET| JUNE 14, 2006
ORTEL, A division of EMCORE
EC-48 2.5 Gbit/s External Cavity Directly
Modulated Lasers
Electrical/Optical Characteristics
Parameters Symbo
l
Conditions/Notes MIN Typ MAX Unit
Peak Optical Output Power Ppeak 3 _ _ mW
Slope efficiency η CW output power 3 mW 0.064 _ _ mW/m
A
Threshold Current ITH _ 15 25 mA
Forward Voltage VF CW output power 3 mW _ 1.3 1.8 V
Monitor Current IMON CW output power 3 mW 0.04 _ 0.4 mA
Monitor photodiode tracking error TE -10 < TC < +70 ºC _ _ ±0.5 dB
TEC set temperature Ts Specified for every laser 17 35 ºC
Center wavelength (100 GHz ITU grid) λc TEC temperature at the
recommended value Ts
1527 _ 1570 nm
Spectral Width (at -20dB) Δλ 2.5 Gbits/s, ER =10 dB; (1) - _ 0.10 nm
Wavelength drift with case (-10 to 70 ºC)
temperature
ΔλΤc TEC temperature at Ts _ _ ±30 pm
Wavelength offset from DWDM ITU grid Δλoffset
TEC temperature at Ts _ _ ±40 pm
Variation in Center Wavelength from ITU
grid over ambient temperature, EOL
ΔλT -10 < TC < +70 ºC,
<20 years at the rated
power
±0.08 nm
Wavelength Temperature coefficient Δλ/ΔT Ts ± 1 ºC 15 30 pm/ºC
Wavelength Current coefficient Δλ/ΔΙ 1.5 2 pm/mA
Optical isolation -10 < TC < +70 ºC 30 dB
Relative Intensity Noise RIN CW, output power 3mW - 135 dB/Hz
Side Mode Suppression Ratio SMSR
CW CW, Pout >1 mW 35 dB
Dynamic 2.5 Gbits/s NRZ, ER =9.5
dB
30 dB
High frequency cutoff S21 at -3 dB 3.5 GHz
Rise/Fall time (20 - 80%) tr, tf 2.5 Gbits/s; PRBS223-1;
NRZ; ER ≥ 9.5;
150 ps
Input Impedance Zin 22 25 28 Ω
Extinction Ratio ER -10 < TC < +70 ºC; (2)
EOL 8.5 dB
BOL 9.5 10 dB
Power Penalty at OSNR = 29dB (2), (3), (4) 2 dB
(1): Time-Averaged spectrum measured with Ando OSA, 10 pm resolution, 1 nm span.
(2): Measured with 100 GHz DWDM MUX/DEMUX or comparable optical filters.
(3): 650km SMF-28 fiber (Dispersion = 11700 ps/nm); 2.5 Gbits/s; PRBS = 223-1, BER= 1x10-11 ; ER ≥ 9.5 dB;
(4): Power Penalty = [total power penalty at the end of the 650km link at OSNR = 29dB] – [Baseline penalty measured back-to-back at OSNR = 29dB]