DFB Series 852nm DFB Laser Light Source

 

The DFB series 852nm DFB laser light source adopts foreign high-performance DFB laser chips, uniquely designed ATC and APC circuits and isolation control to ensure extremely high power and wavelength stability. This light source is mainly used in the field of clock frequency measurement. It can be used with electro-optical modulators to load time frequency signals and transmit signals through optical fibers. It can also be used to measure optical devices in the 850nm band, such as high-speed Si-PIN/APD photodetectors. , CMOS, CCD and other devices' responsivity or response time testing.

 

 

 

• High output power optional.
• Built-in optical isolator.
• Module and desktop packaging are optional.

 

 

• 850nm optical fiber communication system
• Optical frequency comb
• Spectral analysis (Cs)
• Time frequency measurement
• Visible light detector testing system

 

 

 

 

Parameters	Symbol	Minimum	Typical value	Maximum value	Unit
Working wavelength	l	840	850	853	nm
Output optical power	Po	-	50	-	mW
3dB spectrum width	Dl*	0.1	-	2	MHz
Side mode suppression ratio	SMSR	30	45	-	dB
Relative noise intensity	RIN	-	-150	-140	dB/Hz
Power stability*	PSS	-	-	±0.005	dB/5min
	PLS	-	-	±0.01	dB/8h
Output terminal isolation	ISO	30	-	-	dB
Specification		Module
Overall dimensions L x W x H		225×100×40 mm
Power requirements		DC +5V
Output fiber		5.5/125/250µm PMF
Operating mode		CW
Optical connector**		FC/APC

 

* Test conditions: CW, Top=25ºC.

** For SC, LC, MU, and ST connectors, please contact sales staff.

 

 

Parameters	Symbol	Minimum	Typical value	Maximum value	Unit
Operating temperature	Top	ºC	-5		55
Storage temperature	Tst	ºC	-40		85
Humidity	RH	%	5		90

 

 

DFB	852	X	XX	P	XX	XX
DFB	Wavelength: 852nm	Package: M---Module	Power: 10----10mW 50----50mW	Pigtail: P---PMF	Fiber optic connector: FP---FC/PC FA---FC/APC SP---User Specified	Line width: Empty--2MHz 01--1MHz

 

 

Precision Engineered Stability
Leverages imported high - performance DFB laser chips paired with proprietary ATC/APC circuits. Delivers 50mW typical output power and strict wavelength stability (840–853nm), ensuring accuracy for critical applications like time - frequency measurement.

Tailored Flexibility
Offers dual packaging (module/desktop), adjustable power ranges (10–10mW, 50–50mW), and connector options (FC/APC as standard, SC/LC on request). Adapts to lab, industrial, and custom integration needs-no "one - size - fits - all" limitations.

Reliability in Harsh Conditions
Built - in optical isolator (≥30dB isolation) and low noise (- 150dB/Hz typical) guarantee signal integrity. Operates in - 5–55°C environments (up to 85°C storage), resisting temperature swings and interference for long - term, stable performance.

 

 

Q1: What's the core advantage for time - frequency measurement?

A: Ultra - stable wavelength (840–853nm) and low power drift (±0.005dB/5min) ensure precise signal transmission, critical for accurate clock frequency calibration.

Q2: Can I request a non - standard connector?

A: Yes-SC, LC, or other types are available. Just specify "SP–User Specified" in ordering and contact our sales team for customization.

Q3: How does the built - in isolator benefit my setup?

A: The isolator blocks back - reflected light, preventing signal distortion or component damage. Essential for maintaining performance in fiber optic links with reflective devices.

 

If you're interested in our product, don't hesitate to contact us!

 

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