1653.7nm Butterfly Laser Diode

Techwin 1653.7nm butterfly laser diode is specifically designed for methane (CH₄) gas detection, featuring high power, stable wavelength, narrow spectral linewidth, and a high side-mode suppression ratio (SMSR). The laser is housed in a standard 14-PIN butterfly package with standard single-mode fiber and an FC/APC connector output, ensuring good compatibility. This series of products is widely used in optical sensing and gas detection. We can also customize different wavelength gas detection sensors according to customer requirements.

Features

1653.7nm Central Wavelength
Narrow Linewidth
Standard 14-PIN Butterfly Package
High Power
Standard Single Mode Fiber Output
FC/APC Connector

Applications

Optical Gas Detection
Optical Sensing

Parameters

Parameters	Min	Typ	Max	Unit
Output Power @ 130mA		15		mW
Center Wavelength		1653.7		nm
Spectral Linewidth			2	MHz
Side mode Suppression Ratio	35			dB
Optical Isolation	30			dB
Threshold Current		35		mA
Operating Current			130	mA
Operating Voltage			2	V
TEC Temperature Setting	15		35	C
TEC Current			2.5	A
TEC Voltage			4.8	V
Thermistor Resistance @ 25℃		10		kΩ
PD Operating Voltage		-5		V
PD Current			2	mA
Operating Temperature (Case Temperature)	-20		70	℃
Storage Temperature	-40		85	℃
PD dark current			1	nA
Operating Temperature	0		50	℃
Storage Temperature	-40		85	℃

Mechanical Dimensions and PIN Definition:

PIN	Description	PIN	Description
1	Rt	8	NC
2	Rt	9	LD(+)
3	NC	10	NC
4	PD Anode (-)	11	LD(+)
5	PD Cathode (+)	12	LD(-)
6	TEC(+)	13	Case Ground
7	TEC(-)	14	NC

Different wavelength is available according to customer requirements.

Central wavelength	Laser type	Detected Gases
1273nm	DFB	Hydrogen Fluoride
1392nm	DFB	Water Vapor
1512nm	DFB	Ammonia
1532nm	DFB	Acetylene
1567nm	DFB	Carbon Monoxide
1578nm	DFB	Hydrogen Sulfide
1620nm	DFB	Ethylene
1653nm	DFB	Methane
1676nm	DFB	Ethane
1742nm	DFB	Hydrogen Chloride