KLS-601A Series

High-resolution wavelength-tunable diode laser with 0.1 pm wavelength setting resolution. Six band options cover 1180 nm to 1680 nm.

Technical overview

The KLS-601A is a benchtop tunable diode laser source that uses Koshin Kogaku's own narrow-band tunable optical filter to select wavelength. Each unit is ordered in one of six wavelength bands (1220, O, ES, SC, CL or U), with a tunable range of 100 nm or more within the chosen band and a setting resolution of 0.1 pm. Output is +3 dBm or more on all bands except U (0 dBm or more), delivered on polarization-maintaining fiber with a 20 dB or better extinction ratio. Typical linewidth is 50 kHz (100 kHz on the 1220 band) and typical RIN is -145 dB/Hz; a variable optical attenuator, internal low-frequency modulation, external modulation, beam shutter and GP-IB control are provided.

Sources Measurement Laser Characterization Fiber Characterization Sensing

Features

0.0001 nm (0.1 pm) wavelength setting resolution
Wavelength tunable range of 100 nm or more
High-purity, low-noise laser beam for high-dynamic-range spectral measurement
Low RIN, suited to noise figure (NF) measurement of optical fibre amplifiers such as EDFAs
Narrow spectrum linewidth with high short-term frequency stability, for optical beat measurement
Optical output variable attenuation
Internal low-frequency and external high-frequency modulation
Optical output monitoring on the front display
Beam shutter
External output trigger for synchronised measurement with other instruments
GP-IB interface for control from a PC or power meter

Specifications

Specifications
Parameter	Value
Wavelength range (model 1220)	1180-1270 nm
Wavelength range (model O)	1260-1370 nm
Wavelength range (model ES)	1400-1530 nm
Wavelength range (model SC)	1460-1570 nm
Wavelength range (model CL)	1525-1630 nm
Wavelength range (model U)	1620-1680 nm
Wavelength tunable range	≥100 nm
Optical output (models 1220, O, ES, SC, CL)	≥+3 dBm
Optical output (model U)	≥0 dBm
Higher output power	Available depending on the model (note *1 on the manufacturer's table)
Wavelength setting resolution	≤0.1 pm
Wavelength accuracy	≤±15 (Min.: ≤±5) pm
Wavelength precision	≤±5 (Min.: ≤±1) pm
Spectrum linewidth, typical (model 1220)	≤100 kHz
Spectrum linewidth, typical (models O, ES, SC, CL, U)	≤50 kHz
RIN, typical	≤-145 dB/Hz
Optical output flatness, typical	≤±0.2 (APS function ON) dB
Optical output stability	≤±0.03 (60 min.) dB
Frequency stability	≤±100 MHz (60 min.) = ±0.8 pm converted wavelength stability MHz
Optical output variation (attenuator)	Available (max. power to -30 dBm, setting resolution 0.01 dB)
Optical output monitoring	Available (on the display)
Internal low frequency modulation	Available (coherence control)
Beam shutter	Available
Output optical fiber	Polarization maintaining fiber
Polarization	Linear, aligned to the direction of the connector key; extinction ratio ≥20 dB (typical)
External control interface	GP-IB
Dimensions (W x D x H)	340 x 450 x 145 (unit not stated by the manufacturer; assumed mm but NOT confirmed)
Laser safety classification	CLASS 1 LASER PRODUCT, IEC 60825-1: 2007