Koheras AcoustiKâ„¢ System0 pages

Crystal Fibre

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aeroLASE

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Koheras

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SuperK

Koheras AcoustiK™

Multi-channel fiber laser system
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Single frequency operation
Ultra low phase and vibration noise
Turn-key 19” 3U benchtop box system
Available with KHz frequency modulation
(option)

Koheras AcoustiK™ is a 8-channel single frequency DFB
(distributed feedback) fiber laser system with an extremely low
phase and vibration noise, produced for multi-channel sensor
interrogation systems.
The system is supplied as a stand-alone unit in a 19” 3U rack
system including controller electronics and is delivered with a
suitable power supply.

Optical specifications
Koheras AcoustiK™

E15

Center wavelength [nm] 1

8 channels within 1530-1565

Laser emission

CW - single frequency

Beam quality

M² < 1.05

Output power [mW] (per laser)

Up to 50 W

Line width (120 μsec) [kHz]
Phase-noise [μrad/√Hz] 1m opt. path

<1
<-120@500MHz/ <-110@10Hz

RIN peak [MHz]

app. 0.3

RIN level [dBc/Hz]
Optical S/N [dB] (50 pm res.)

Key features
- Stable single mode and single polarisation operation
- Burst noise and mode hop free operation
- Unprecedented low phase and intensity noise
- Ultra narrow linewidth
- Reduced susceptibility to vibration noise
- High wavelength selectability within ITU grid
- Riliable stand-alone unit in a 19” 3U rack system
- Digital control interface
Examples of applications

- Sensor interrogation for oil and gas exploration

<-115@1MHz/<-140@10MHz
> 50 (depend. on wavelength)

Thermal tuning range [nm]

KOHERAS AcoustiK™

Standard

Thermal tuning

Power supply requirements [VDC]

> 0.6

E15
90-240 VAC; 50-60Hz

Fiber pigtail length [m]

>1

Optional

Connectors

FC/APC or collimated

> 16 (0-200 V DC)

Dimensions

19” 3U

Operating temperature range [˚C]

15 - 40

Fast Piezo tuning capability
Piezo-electric tuning range [pm] 2

Technical specifications

Optional

PM output

Piezo-electric tuning bandwidth [kHz] 3

up to 100

Optical monitor output

Incl. (FC/APC)

Storage temperature range [˚C]

-20 - 50

1. The center wavelength is selectable within the specified range.
2. External piezo driver required.
3. All optical specifications are valid up to 10kHz PZT bandwidth.

Specifications are subject to change without notice.
April 2010 ©Copyright NKT Photonics A/S

NKT Photonics A/S (Headquarters)
Blokken 84 ● 3460 Birkerød ● Denmark
Phone: +45 4348 3900
Fax:
+45 4348 3901
www.nktphotonics.com

Acoustik-100413

NKT Photonics GmbH
Schanzenstrasse 39 ● Bldg D9-D13
51063 Cologne ● Germany
Phone: +49 221 99511-0
Fax:
+49 221 99511-650

NKT Photonics Inc.
1400 Campus Drive West ● Morganville
NJ 07751 ● USA
Phone: +1 732 972 9937
Fax:
+1 732 414 4094