CoSF-D-TM-M Single Frequency Fiber Laser Module

Connet CoSF-D narrow linewidth single frequency fiber laser is a low-noise single frequency fiber laser independently developed by patent technology. It adopts distributed feedback Bragg grating (DFB) fiber laser technology and has independent intellectual property rights. The single frequency fiber laser It has a stable single polarization, single longitudinal mode, ultra-narrow linewidth single frequency laser output.

Connet adopts the relative intensity noise (RIN) suppression technology outside the cavity to ensure the low noise operation of the CoSF-D single frequency fiber laser. The CoSF-D single frequency fiber laser has excellent performance, with very low phase noise and frequency noise. The basic module of the CoSF-D narrow linewidth single frequency fiber laser has a small size, a sturdy package, and strong anti-interference ability.

The CoSF-D-TM-M module is based on Thulium-doped fiber, and the center wavelength can be selected in the 1900nm to 2100nm range. The output power can reach 20mW. The typical line width is less than 20kHz.

Specifications：

Parameter	Unit	Specification
Parameter	Unit	Min	Typ.	Max
Part no.		CoSF-D-TM-M
Center wavelength¹	nm	1850-2100 nm fixed, other specify
Output power²	mW	20
Laser output		CW, Single frequency & Single longitudinal mode
Beam quality	M²	-	1.05	1.1
Linewidth	kHz	-	10	20
RIN peak frequency	MHz	0.4	1.0	1.6
RIN peak	dBc/Hz	-	-110	-100
RIN @10MHz	dBc/Hz	-	-140	-130
SMSR (50pm resolution)	dB	45	50	-
Output polarization		Linear
Polarization extinction ratio (PER)	dB	20	22	-
Output power stability	%	-	±1	±2
Output isolation	dB	30	35	-
Wavelength thermal tuning	nm	-	0.6	-
PZT wavelength modulation		Optional
Modulation frequency (linear)	kHz	DC	10	20
Modulation wavelength range	GHz	-	8	10
Operating temperature	℃	0	-	+40
Storage temperature	℃	-20	-	+60
Power supply	V_DC	12
Communication interface		RS485
Output fiber type		Panda PM1950
Output fiber length	m	>0.5
Output optical connector		FC/APC
Dimension	mm	200x200x45

Note:

1. Typical center wavelength: 1940nm, 2050nm, Other wavelengths available.
2. Higher power available, 20mW is fixed, 50mW and 100mW output power are adjustable.

Ordering Information:

CoSF-D-Tm-M-<19xx>-<PW>-PMF/SMF-PZT-FA

PW: Output power, 20mW is fixed, 50mW and 100mW output power are adjustable.
SMF output is upon request, PZT fast modulation is optional. Monitoring output is upon request.

Features:

· Narrow linewidth <20kHz

· Customizable operating wavelength

· Stable single frequency, single polarization output

· Superior noise operatio

· High reliability

Applications:

· Distributed optical fiber sensing

· Coherent LiDAR

· Laser spectroscopy

· Gas absorption measurement

· Scientific research

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