Koshin Kogaku Co., Ltd
KLS-601A series is the flag ship model of Koshin Kogaku’s tunable laser light sources. This wavelength tunable laser equipment has the fine wavelength resolution and the narrow spectrum linewidth, and is applicable to the measurement of DWDM optical components and equipments. The low relative intensity noise (RIN) property enables this product to be applied to the evaluation of erbium-doped fiber amplifier (EDFA). KLS-601A series has various types that covers wide wavelength range of O-band through LU-band, keeping its notable features including fine wavelength resolution, extremely narrow spectrum linewidth and high optical power stability.
Specifications
| Items / Model | 1220-Band | O-Band | ES-Band | SC-Band | CL-Band | LU-Band |
| Tunable wavelength range(nm) | 1180-1270 | 1260-1370 | 1400-1530 | 1460-1570 | 1525-1630 | 1570-1680 |
| Optical output power *1 | ≥ 0.0dBm | ≥ +3.0dBm | ||||
| Wavelength resolution | 0.1pm | |||||
| Wavelength accuracy | ≤ ±15pm (typical < ±5pm) | |||||
| Wavelength reproducibility | < ±5pm (typical < ±1pm) | |||||
| Line width (typical) | ≤ 100kHz | ≤ 50kHz | ||||
| RIN（typical） | ≤ -145dB/Hz (at optical output: 0dBm) | |||||
| Optical output flatness (typical) | ≤ ±0.2 dB (APS function: ON) | |||||
| Optical output stability | ≤ ±0.03dB (60 min) | |||||
| Frequency stability | ≤ ±100MHz(60 min) = ±0.8pm (Converted wavelength stability ) | |||||
| Optical attenuatior | Available（Max. -30dBm, Resolution: 0.01dB） | |||||
| Optical output monitor function | Available | |||||
| Built-in LF modulation | Available (Coherent control function) | |||||
| Beam shutter function | Available | |||||
| External control I/F function | GP-IB | |||||
| Power supply | 100V-240VAC 48-66Hz automatic switch | |||||
| Output fiber | Polarization Maintaining fiber (FC/SPC connector*2) | |||||
| Polarization states (typical) | Linear polarization, key direction of output connector, extinction ratio ≥ 20dB (typical) | |||||
| Size | 340W*450D*145H | |||||
| Operating environment |
Operating temperature limit: 10-35 degC |
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| Storage temperature range | -10 degC ー +50 degC Percentage humidity: 85% or less (non condensing) |
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*1 Output power can be increased depending on model.
*2 Specifications are subject to change without notice.
Features
■Wide dynamic range
KLS-601A series guarantee an accurate measurement of optical devices with its extraordinary wide dynamic range.
■Low noise
KLS-601A sereis is best suitable for noise figure (NF) measurement of the optical fiber amplifier: EDFA, etc. The excellent RIN (Relative Intensity Noise) characteristics ensures accurate measurement without affecting the characteristics of measuring object.
■Narrow spectrum linewidth
Spectrum linewidth indicates the distribution of wavelength, and the narrower the spectrum line-width, the higher the wavelength isolation. Variation of the oscillation frequency affects the optical spectrum linewidth.
* As for our tunable laser light source, a band pass filter is used in an optical wavelength variable mechanism, and it has capabilities of creating a high-level narrow optical spectrum linewidth with excellent monochromatic and the high stability level over a short period of time.
■Source of light for the beat light
It is the best as the source of light that generates an optical beat because of the light of stable frequency and the high-resolution evaluation wavelength setting.
■Modulation function
KLS-601A series has the external high frequency modulation function and the internal low frequency modulation function. These functions enable a more accurate mearsument of an optical characteristic.
Applications
■Mearsurement of the optical components and equipments
• Our tunable laser has GP-IB, and it measures coordination between PC and Power Meter.
• You can use other measuring instruments with synchronization by the external output trigger.
■Fiber sensing
Our tunable laser is the best for fiber sensing, because it has low noise, narrow line-width and high stability.
