Bookham LC94 User Manual
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Data Sheet
980nm Pump Laser Module Grating Stabilized, 300mW
LC94
These lasers are designed as pump sources for
Erbium-Doped Fiber Amplifier (EDFA) applications. Processes
and techniques of coupling the fiber to the laser allow high
output powers that are very stable with both time and
temperature. The grating is located in the pigtail to stabilize
the wavelength. Devices are available with kink free output
powers to 300mW. The LC94 series pump module utilises a
double Fiber Bragg Grating design for enhanced wavelength
and power stability performance. This product has been
designed to ensure superior wavelength locking over drive
current, temperature and optical feedback changes.
Features:
• Double Fiber Bragg Grating wavelength stabilization
• High output power, up to 300mW kink free
• Single-mode fiber pigtail
• Internal thermoelectric heatpump and
monitor photodiode
• Hermetically sealed 14-pin butterfly package
• Telcordia GR-468-CORE compliant
• Field proven high reliability
• RoHS compliant
Applications:
• Low noise EDFAs
• Dense wavelength division multiplexing
(DWDM) EDFAs
• CATV Applications
1
Data Sheet
Characteristics
Conditions unless otherwise stated: Case temperature -20 to +75°C
Submount temperature 25°C
Monitor diode bias -5V
CW operation
Kink-free fiber-coupled output power: LC94ZC74-20R 100mW LC94A74-20R 200mW
avelength = 974nm) LC94ZD74-20R 110mW LC94B74-20R 210mW
(W
LC94ZE74-20R 120mW LC94C74-20R 220mW
LC94ZF74-20R 130mW LC94D74-20R 230mW
LC94ZG74-20R 140mW LC94E74-20R 240mW
LC94ZH74-20R 150mW LC94F74-20R 250mW
LC94ZJ74-20R 160mW LC94G74-20R 260mW
LC94ZK74-20R 170mW LC94H74-20R 270mW
LC94ZL74-20R 180mW LC94J74-20R 280mW
LC94ZM74-20R 190mW LC94K74-20R 290mW
LC94L74-20R 300mW
Parameter Min Typ Max Unit
Threshold current (Ith) 30 40 mA
Operating drive current (I
Forward voltage (V
e wavelength (
Centr
Spectral width (RMS @ -13dB) 0.2 1 nm
um stability (t = 60s) ±0.5 nm
Spectr
Temperature dependence of peak wavelength 0.02 nm/°C
Wavelength tolerance ±0.5 nm
Monitor detector responsivity 1.0 8 25 µA/mW
Monitor dark current 50 nA
mistor resistance (at 25
Ther
Intended laser submount operating temperature 20 25 30 °C
Power stability
Peak-to peak, t = 60s,
DC to 50kHz sampling, T
>20mW
10-20mW 0.1 dB
Laser temperatur
Heatpump current (
2
Heatpump voltage (
e, R = 10k
) ZC thru ZD 250 mA
f
) 1.9 2.5 V
f
λc)
C) 9.5 10 10.5 k
°
= 25°C
C
Ω 23.5
∆T = 50°C, If= 500mA) 1.3 A
∆T = 50°C, If= 500mA) 2.8 V
ZE thru ZF 300 mA
ZG thru ZJ 350 mA
ZK thru ZM 400 mA
A thru B 450 mA
C thru E 500 mA
F thru K 550 mA
L 600 mA
974 nm
0.05
26.5
dB
°
Ω
C
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