Tehcwin CKSF-D-EY-M  Erbium & Yetterbium Co-doped Fiber with  Narrow Linewidth (<10kHz) and Low Phase Noise, Low Relative Intensity Noise (RIN) Single Frequency Fiber Laser for Distributed Optical Fiber Sensing 

Techwin CKSF-D is a low-noise Single Frequency Fiber Laser based on Distributed Feedback Bragg Grating (DFB) technology. It has independent intellectual property rights and achieves a stable single-frequency laser output with single longitudinal mode, linear polarization, and narrow linewidth. CKSF-D has very low phase and frequency noise and low relative intensity noise (RIN). Techwin uses unique packaging technology to ensure low-noise DFB single frequency fiber lasers with excellent wavelength stability.

Techwin uses extra-cavity technology to significantly suppress the relative intensity noise (RIN) of the DFB single frequency fiber laser, ensuring that the resonant cavity of the single frequency fiber laser is not disturbed. Please refer to CKSF-D-RS series products.

CKSF-D narrow linewidth single frequency fiber laser module has a small size, a sturdy package, strong resistance to environmental interference, and an output power of more than 100mW. CKSF-D-EY-M is based on Erbium & Yetterbium co-doped fiber with narrow linewidth (<10kHz) and low phase noise, low relative intensity noise (RIN). The standard wavelength is 1550.12nm, and the optional wavelength range is 1530-1570nm, such as the standard wavelength under the ITU framework. Other wavelengths can be customized according to requirements.

Distributed optical fiber sensors characterized by spatially resolved measurements along a single continuous strand of optical fiber have undergone significant improvements in underlying technologies and application scenarios, representing the highest state of the art in optical sensing. There are three types of distributed optical fiber sensors which are based on Rayleigh, Brillouin, and Raman scattering, and use various demodulation schemes, including optical time-domain reflectometry, optical frequency-domain reflectometry, and phase sensitive otdr.

Features:

l   Ultra-narrow linewidth <10kHz

l   Very low phase noise and frequency noise

l   Low relative intensity noise (RIN)

l   Stable single frequency, single polarization output

l   No mode-hopping

l   Small sized package 145x100x25mm

l   High reliability

Applications:

l   Distributed optical fiber sensing

l   Coherent LiDAR

l   Fiber optic hydrophone

l   Laser spectroscopy

l   Coherent communication

l   Gas absorption measurement

l   Cold atomic physics

l   Other scientific research

 

Specifications:

Parameter	Unit	Specification
		Min	Typ.	Max
Part no.		CKSF-D-EY-M
Center wavelength	nm	1530-1572nm fixed, other specify
Output power	mW	5	50	100
Laser output		CW, Single frequency & Single longitudinal mode
Beam quality	M2	-	1.05	1.1
Linewidth	kHz	-	8	10
RIN peak frequency	kHz	500	600	700
RIN peak	dBc/Hz	-	-115	-100
RIN @10MHz	dBc/Hz	-	-140	-135
Phase noise (1m OPD)	urad/√Hz	80@100Hz
	urad/√Hz	7@10kHz
	urad/√Hz	0.3@100kHz
SMSR (50pm resolution)	dB	60	>70	-
Output polarization		Linear
Polarization extinction ratio (PER)	dB	20	23	-
Output power stability	%	-	0.5	1
Output isolation	dB	50	-	-
Wavelength thermal tuning	nm	0.6	0.8	1.0
PZT wavelength modulation		Optional
Modulation frequency (linear)	kHz	DC	10	20
Modulation wavelength range	GHz	-	>8	>10
Operating temperature	℃	0	-	60
Storage temperature	℃	-40	-	85
Power supply	VDC	12
Communication interface		RS485
Output fiber type		Panda PM1550
Output fiber length	m	> 0.5
Optical connector		FC/APC
Dimension	mm	145x100x25
Weight	kg	<0.5

 

	Ordering Information: CKSF-D-EY-M-<15xx>-<PW>-PMF/SMF-PZT-FA  PW: Output power, 5- 20mW is fixed, 50mW and 100mW output power are adjustable Options:  1. SMF output 2. Monitoring output 3. PZT fast modulation