LSC2500

Features:

• Center Wavelength Between 1535 nm and 1565 nm

• Modulation Capability up to 2.488 Gb/s

• 30 dB Internal Optical Isolation

• 25 W Impedance Matched

• Wide Operating Temperature Range: -20°C to +65°C

• Industry Standard Hermetic 14 PIN Butterfly Package


Application

• Telecommunications

• Fiber Optic Sensors

• Cable Television

• Military Communications and Control Systems

• Instrumentation


Pinout




Specifications

Parameter		Minimum	Typical	Maximum	Units
Threshold Current (Ith)		10	-	30	mA
Slope Efficiency[3]		0.02	0.05	0.12	mW/mA
Rise Time:10% to 90%		-	-	0.12	ns
Fall Time: 90% to 10%		-	-	0.12	ns
Peak Wavelength		1535	-	1565	nm
Spectral Width (30 dB) Modulated		-	-	0.6	nm
Temperature Dependence of Peak Wavelength		-	0.10	-	nm/°C
Sidemodes (Modulated) [2]		-	-	34	dB
Dispersion Penalty (1800 ps/nm) [2]		-	-	1.5	dB
Tracking Error	+65°C Case, +25°C Chip [4]	-	-	0.5	dB
	20°C Case, +25°C Chip	-	-	0.5	dB
Flatness of Frequency Response to 3 GHz		-	-	± 1.5	dB
Cut Off Frequency		3.5	4.3	-	GHz

Description

LSC2500 laser modules are highly reliable fiber optic light sources operating in the 1550 nanometer band. The internal DFB lasers are based upon InGaAs ridge waveguide Multi Quantum Well technology and fabricated by the Metal Organic Vapor Phase Epitaxy (MOVPE) process, resulting in long lifetimes and modest threshold currents.

The LSC2500 package includes a photodiode for monitoring the laser output, a thermistor for monitoring laser heatsink temperature, and a Peltier effect thermoelectric cooler (TEC). A heatsink mounting flange is incorporated into the industry standard 14 PIN package.

The LSC2500 also has 30 dB of optical isolation which is temperature controlled to maintain isolation over the full operating temperature range.