1550nm 30mW single mode DFB laser

With optimized optical properties, 1550nm single-mode DFB is an ideal choice for demanding sensing system applications. The innovative chip design has suppressed high-order longitudinal and transverse modes while maintaining linear polarization stability. The laser has high output power, narrow line width and good consistency and is currently favored by domestic scientific research customers. At present, our existing inventory wavelengths cover 1000-2400nm. For some specific application areas of customers, we can provide customers with customized chip screening services.

Product features：Ultra-high output power、 Narrow linewidth、 Internal TEC and thermistor 、 2 nm TEC tunability

Application area：Fiber optic communication、 Seed source

Unit Price

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Part Number

PL-DFB-1550-C-1-SA-14BF

Lead Time

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Stock

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General Parameters

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Dimensional Drawing

Parameter

Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Incident wavelength	λ_R	1549	1550.12	1551	nm	T = 20°C, I_TEC = 0, P_OP= 20mw
Threshold current	I_TH		10	35	mA	T = 20°C
Output power	P_opt	20	30	40	mW	T = 0 … 50°C
Threshold voltage	U_TH		1.80		V
Laser current	I_OP			200	mA	P_opt= 20mw
Laser voltage	U_OP		2.0		V	P_opt= 20mw
Electro-optical conversion ratio	η_WP		12		%	P_opt= 20mw
Slope efficiency	η_S		0.74		W/A	T = 20°C
3dB modulation bandwidth	ν3dB	0.10			GHz	P_opt =20mw(For ESD protection diodes)
Relative noise intensity	RIN		-130	-120	dB/Hz	P_opt= 0.3 mW @ 1 GHz
Wavelength tuning current			0.01		nm/mA
Wavelength tuning temperature			0.1		nm/deg
Thermistor	R_thermal	3		5	K/mW
Side mode suppression		30			dB
Beam divergence	θ	10		25	°	P_opt = 20mwFull 1/e² bandwidth
Spectral bandwidth	Δν		3		MHz	P_opt = 20mw
TEC current	I_TEC			1000	mA	Proper heat sink required
NTC Thermistors		9.5	10.0	10.5	kΩ	T= 25℃
NTC temperature dependence		10/exp[3892·(1/298K-1/T_OP)]			kΩ

Absolute Maximum

storage temperature	-40 … 125°C
Operating temperature	-20 … 80°C
Electric power loss	500mW
Forward laser current	130mA
Backward current	10mA
Soldering temperature*	270C°
(*TEC temperature must be below 70°C)

Spectrum

L-I-V curve

Temperature/wavelength tuning of TEC current

Beam quality analysis

Pin definition

With TEC pin configuration

1	Thermistor	8	NC
2	Thermistor	9	NC
3	NC	10	NC
4	PD Monitor Anode (-)	11	Laser Anode (+),Case Ground
5	PD Monitor Cathode (+)	12	RF Laser Input Cathode (–)
6	Thermoelectric Cooler (+)	13	Laser Anode (+),Case Ground
7	Thermoelectric Cooler (–)	14	NC

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