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.
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
| 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 |
Applications
- High-dynamic-range measurement beyond the reach of an optical spectrum analyzer
- Optical module evaluation under PC or power-meter control over GP-IB
- Noise figure (NF) measurement of optical fiber amplifiers (EDFA)
- Optical beat signal generation
- Light source for optical fiber sensing
- Synchronised measurement with other instruments via external output trigger
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