2000
Corning Lasertron 2000 Product Guide
QLM9S48275 Series
980 nm Fiber Bragg Grating
Stabilized Pump Lasers
■DWDM optical amplifier applications
■975 nm center emission wavelength
■Up to 190 mW kink-free power with excellent power stability
■Excellent wavelength stability over power, temperature, time
■Highest slope efficiency in the industry
Pin Connections
1 Cooler (+)
2 Thermistor
3 Monitor Anode (- bias)
4 Monitor Cathode (+ bias)
5 Thermistor
6NC
7NC
8NC
9NC
10 Laser Anode (+)
11 Laser Cathode (-)
12 NC
13 Case Ground
14 Cooler (-)
350
25
2
5
2
1.4
3.2
-40 to 85
-20 to 85
Absolute Maximum Ratings
Laser Element
Forward current (mA)
Reverse current (mA)
Reverse voltage (V)
Thermistor
Voltage (V)
Current (mA)
Thermoelectric Cooler
Current (A)
Voltage (V)
Package
Storage temperature (oC)
Operating temperature (oC)
Cooler
Monitor
Laser
Thermistor
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Pinout:
QLM9S48275pp
Min Typ Max
2
9.5
0
-40
230
122
100
70.3
1
2.54
975
250
125
5.9
900
Laser Characteristics
Rated fiber-coupled kink-free output, Pk (mW)
Optical power stability @ power = rated maximum Pop (%)
Forward drive current @ rated maximum Pop (mA)
Forward voltage @ rated maximum Pop (V)
Threshold I (mA)
Center wavelength, peak emission @ rated maximum Pop (nm)
Spectrum stability vs. power @ power = 20 mW to Pk (nm)
Spectrum stability vs. time @ Po, t = 60 sec, Tcase = constant (nm)
Spectrum stability vs. temperature, Tlaser = 25oC, Tlaser = 0 to 75oC (nm/oC)
Monitor Photodiode Characteristics
Monitor detector responsivity @ -5 V (µA/mW)
Monitor dark current @ -5V, IL = 0 mA, Tcase = 25oC (nA)
Thermoelectric Cooler Characteristics
Current @ IL = 270 mA, DT = 50oC (A)
Voltage @ IL = 270 mA, DT = 50oC (V)
Thermistor resistance (k)
Operating case temperature (oC)
Storage temperature (oC)
Grating and Fiber Characteristics
Fiber type: FlexcorTM 1060 Prime, 250 µm
Primary coating diameter (µm)
Cladding diameter (µm)
Mode field diameter (µm)
Core-cladding concentricity (µm)
Fiber/grating proof test level: (kpsi)
(Kg/mm2)
Grating bend radius: (in)
(cm)
Grating protection diameter, flexible sleeve (µm)
Fiber connector: none
*Specified by customer in increments of 10 mW — see “Ordering Information” below
Specifications Contact Corning Lasertron regarding special requirements.
(Tlaser = 25oC, Tcase = 0 to 75oC, except as noted)
customer-specified between 80 and 190 mW*
1
350
2.5
25
0.5
0.2
0.02
13
100
1.2
2.7
10.5
75
85
270
128
0.5
Description
Corning Lasertron QLM9S48275 series fiber Bragg grating stabilized (“BGS”) pump
lasers are available in production volumes with fiber-coupled optical kink-free powers of
up to 190 mW with center emission wavelengths of 975 nm. These BGS pump lasers are
critical components in amplifiers for use in dense wavelength division multiplexing
(“DWDM”) fiber-optic transmission systems. Reliability of Corning Lasertron lasers has
been demonstrated by more than 60,000 field devices operating cumulatively for over
600 million hours.
Ordering Information
Base model QLM9S48275pp, where pp = the pump kink-free power (in 10 mW increments)
divided by ten (e.g. pp = 08 for 80 mW, pp= 16 for 160mW and pp=17 for 165 mW).
For example, to order a 975 nm, 165 mW kink-free power pump laser, the complete model
number would be QLM9S4827517.
16
