QLM9P48 Series OptiLockTM 980 nm Fiber Bragg Grating Stabilized Pump Lasers Superb optical performance over time and temperature, and regardless of stress, aging and changes in fiber grating orientation: power, wavelength, tracking ratio, threshold current and monitor photo-detector current remain stable DWDM optical amplifier, telecom, CATV & datacom applications 973-986 nm center emission wavelength Up to 200 mW kink-free power Exceptional wavelength-locking capability Proven reliability based on 60,000 devices, 600 million hours Description Pin Connections 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Cooler (+) Thermistor Monitor Anode (- bias) Monitor Cathode (+ bias) Thermistor NC NC NC NC Laser Anode (+) Laser Cathode (-) NC Case Ground Cooler (-) Pinout: 1 Cooler 14 2 Thermistor 13 12 3 4 11 Monitor Corning Lasertron's new OptiLockTM family of 980 nm fiber Bragg grating stabilized ("BGS") pump lasers is available in production volumes with fiber-coupled optical kink-free powers up to 200 mW at center wavelengths from 973 to 986 nm. In addition to extraordinary wavelength-locking capabilities (zero probability of wavelength unlocking), Corning Lasertron OptiLockTM BGS pump lasers also feature superb power stability over an extended range of operating powers, temperatures and time. Other key performance characteristics of these devices -- such as tracking ratio, monitor photo-detector current, and threshold current -- remain consistently stable regardless of stress, aging and changes in fiber grating orientation. Power in band, spectral width, and side mode suppression ratio also remain stable under such conditions. These BGS pump lasers are critical components in amplifiers for use in dense-wavelength-division multiplexing ("DWDM") fiber-optic transmission systems requiring wide bandwidth, gain-flattened, stable performance. OptiLockTM pump lasers maintain long-term performance of DWDM networks by eliminating wavelength unlocking that occurs as a result of handling, aging, or inevitable change in fiber grating orientation and stress. The shift to higher channel counts requires amplifiers using high-power pumps with extremely stable dynamic performance. These new BGS pumps enable our customers to provide these state-of-the-art amplifiers to end users of the latest DWDM systems. The QLM9P48 series of pump lasers is also suitable for telecom, CATV and data communications applications which require a fixed, narrow-band, stable spectrum over large ranges of operating powers and temperatures over an extended time period. Corning Lasertron OptiLockTM BGS pump lasers feature designed-in reliability based on unparalleled experience with 980 nm pump lasers, and over 600 million cumulative operating hours of more than 60,000 devices in the field. This product is also available in a low-profile package; contact Corning Lasertron for more information on model QLM9P49. 10 Specifications 6 9 See specification table and absolute maximum ratings on the following page. 7 8 5 Laser Ordering Information Base model QLM9P48llpp, where: = 2 for 250 m FlexcorTM fiber; 9 for 900 m FlexcorTM fiber ll = the last two digits of the pump's center emission wavelength (e.g. ll = 75 for 975 nm center emission wavelength) pp = the pump kink-free power (in 10 mW increments) divided by ten (e.g. pp = 08 for 80 mW, pp= 16 for 160 mW and pp=17 for 165 mW). 14 2000 Corning Lasertron 2000 Product Guide For example, to order an OptiLockTM fiber Bragg grating stabilized pump laser with 975 nm center emission wavelength, 165 mW kink-free power, and 250 m FlexcorTM fiber, the complete model number would be QLM9P4827517. Specifications Contact Corning Lasertron regarding special requirements. (Tlaser = 25oC, Tcase = 0 to 75oC, except as noted) QLM9P48llpp* Min Typ Max Laser Characteristics Rated fiber-coupled kink-free output, Pk (mW) customer-specified between 80 and 200 mW* Optical power stability @ power = 20 mW to Pk(%) 1 Forward drive current @ rated maximum Pop (mA) 350 Forward voltage @ rated maximum Pop (V) 2.5 Threshold I (mA) 25 Center wavelength, peak emission @ rated maximum Pop (nm) 973-986 Spectrum stability vs. power @ power = 12 mW to Pk (nm) 0.5 Spectrum stability vs. time @ Po, t = 60 sec, Tcase = constant (nm) 0.15 Spectrum stability vs. temperature, Tlaser = 25oC, Tlaser = 0 to 75oC (nm/oC) 0.02 Monitor Photodiode Characteristics Monitor detector responsivity @ -5 V (A/mW) 2 13 Monitor dark current @ -5V, IL = 0 mA, Tcase = 25oC (nA) 100 Thermoelectric Cooler and Thermistor Characteristics Current @ IL = 270 mA, DT = 50oC (A) 1.2 Voltage @ IL = 270 mA, DT = 50oC (V) 2.7 Thermistor resistance (k) 9.5 10.5 Operating case temperature (oC) 0 75 Storage temperature (oC) -40 85 Grating and Fiber Characteristics Fiber type: FlexcorTM 1060 Prime, 250 m or 900 m Primary coating diameter (m) 230 250 270 Secondary tight buffer coating diameter, 900 m only (m) 850 950 900 Cladding diameter (m) 122 125 128 Mode field diameter (m) 5.9 Core-cladding concentricity (m) 0.5 Fiber/grating proof test level: (kpsi) 100 2 (Kg/mm ) 70.3 Grating bend radius: (in) 1 (cm) 2.54 Grating protection diameter, flexible sleeve (m): 250 m 900 900 m 2000 Fiber connector: none 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) 350 25 2 5 2 1.4 3.2 -40 to 85 -20 to 85 *Specified by customer in increments of 10 mW -- see "Ordering Information"on previous page 2000 Product Information/Lasers 15