Description

The DFB Tunable Laser Diode in butterfly package with SM fiber pigtail is designed for high-precision optical applications requiring flexible wavelength control. Covering O-, C-, or L-band with a wide tuning range up to 40 nm, this module enables dynamic wavelength selection for advanced photonic systems.

Integrated with TEC, thermistor, and monitor photodiode, the module ensures stable wavelength output and precise control under varying operating conditions. The simple tuning mechanism allows efficient wavelength adjustment through current control, making it suitable for both laboratory and industrial environments.

With high spectral purity, excellent stability, and compact butterfly packaging, this tunable laser module is widely used in test and measurement systems, LiDAR, and optical sensing applications.

Key Features

• Wide tuning range up to 40 nm
• Available in O, C, and L bands
• Stable output with TEC temperature control
• Integrated monitor photodiode and thermistor
• High SMSR up to 38 dB
• Narrow linewidth (≤5 MHz)
• Compact butterfly package with SM fiber pigtail
• Simple current-based tuning control

Applications

• Optical test and measurement systems
• LiDAR and ranging systems
• Optical sensing applications
• Tunable light source for laboratories
• Fiber optic system testing

Electrical and Thermal Parameters(TOP = 0 to 70℃)

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Operating case temperature	TOP	0	–	70	℃
Laser chip temperature	TL	25	–	65	℃
Laser Gain current	I1	–	35	60	mA	1
Channel Selector Current	I2	–	–	120	mA
Fine Tuning Current	I3	30	60	–	mA
Photodiode bias voltage	VPD, ref	-3	–	0	V
Photodiode Current	IPD	20	–	1000	uA
Photodiode Dark Current	ID	–	–	100	nA
Thermistor resistance	Rth	9.5	10	10.5	KΩ	1
Thermistor sensitivity index	β	–	3930	–	–	1
TEC current	ITEC	–	0.6	–	A	2
TEC voltage	VTEC	–	2.2	–	V	2

Notes:

1. With the laser chip temperature set to 45°C.
2. In steady state, with the laser chip temperature set to 45°C, and a case temperature of 70°C.

Optical Parameters(TOP = 0 to 70℃)

Parameter	Min	Typ	Max	Unit	Notes
Output Power	3	5	–	dBm	1
Output Power Variation	–	0.5	–	dB
Power Stability @12hour	–	0.05	–	dB
Tuning Range	–	35	–	nm
SMSR	35	38	–	dB
Optical Isolation	25	–	–	dB
Linewidth	–	–	5	MHz	2
RIN	–	-135	–	dB/Hz

Notes:

1. For all channels.
2. Intrinsic Lorentzian linewidth, measured e.g. using a phase noise spectral density measurement,disregarding low frequency phase noise originating from the drive circuitry.

Absolute Maximum Ratings

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Maximum Supply Voltage	Vcc	-0.5	–	4.0	V
Storage Temperature	TS	-40	–	85	℃
Relative Humidity	RH	0	–	85	%	1
LD Forward Bias Voltage	–	–	–	2.3	V
Laser Gain current	I1	–	–	120	mA
Channel Selector Current	I2	–	–	120	mA
Fine Tuning Current	I3	–	–	120	mA
Photodiode bias voltage	VPD, ref	-5	–	0	V
Photodiode reverse current	IPD, ref	–	–	2	mA
TEC Current	ITEC	–	–	1	A
TEC Voltage	VTEC	–	–	3	V
Lead Soldering Temperature and Time	Tsold/t	–	–	260	℃/s
Fiber bend radius	r	30	–	–	mm

Product Size

Dimensions are in millimeters

Pin Configuration

Pin	Description	Pin	Description
1	TEC (+)	8	Null
2	LD3	9	Null
3	Thermistor	10	Null
4	Thermistor	11	LD-
5	MPD (+)	12	LD1
6	MPD (-)	13	LD2
7	Null	14	TEC (-)

Ordering Information

Family Name	Package	Bite Rate	Modulation	Fiber	Connector	Wavelength	Wavelength Range	Spacing
TL	C: TOCAN TOSA D: XMD TOSA T:TOCAN BF:Butterfly	A: CW E:Discrete	D: DML E: EML	SM MM PM	0: null 1: SC/PC 2: SC/APC 3: SC/UPC 4: FC/PC 5: FC/APC 6: FC/UPC 7: LC/PC 8: LC/APC 9: LC ReceptacleX:customized	C: C Band L: L Band	40: 40nm 15: 15nm	100GHz