IntraAction FCM Series Fibre Pigtailed Acousto-Optic Modulator
A fibre pigtailed acousto-optic device designed to modulate a 1200 nm – 1600 nm laser beam.
- Near IR wavelength range
- Intensity modulation
- Optical frequency shifting
- Choice of frequency shift
- Low RF drive power
- High reliability
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SPECIFICATIONS |
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Acousto-Optic Material |
AMTIR-1 Chalcogenide Glass |
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Optical Fiber1 |
Singlemode |
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Fiber Connector1 |
FC-PC |
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Optical Back Reflection2 |
-40 dB |
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Optical Polarisation |
Any |
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Input Impedance / VSWR |
50 ohms / 1.2:1 |
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Size |
See outline drawing |
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MODEL (MODULATOR)3 |
FCM-40.8E5C |
FCM-40.8E6C |
FCM-401E5C |
FCM-401E6C |
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Optical Wavelength |
1.55 μm |
1.3 μm |
1.55 μm |
1.3 μm |
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RF Frequency4 |
40 MHz |
40 MHz |
40 MHz |
40 MHz |
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Optical Frequency Shift |
+ 40 MHz |
+ 40 MHz |
+ 40 MHz |
+ 40 MHz |
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RF Drive Power5 |
600 mW |
500 mW |
500 mW |
400 mW |
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Insertion Loss (RF on) |
< 3 dB |
< 3 dB |
< 2.4 dB |
< 2.4 dB |
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Extinction Ratio (RF on/RF off)5 |
>55 dB |
> 55 dB |
> 55 dB |
> 55 dB |
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Modulation Bandwidth (-3 dB) |
7.5 MHz |
7.5 MHz |
4 MHz |
4 MHz |
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Optical Rise Time |
60 ns |
60 ns |
120 ns |
120 ns |
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MODEL (ATTENUATOR)3 |
FCM-40.8E5CA |
FCM-40.8E6CA |
FCM-401E5CA |
FCM-401E6CA |
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Optical Wavelength |
1.55 μm |
1.3 μm |
1.55 μm |
1.3 μm |
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RF Frequency4 |
40 MHz |
40 MHz |
40 MHz 4 |
0 MHz |
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RF Drive Power5 |
600 mW |
500 mW |
500 mW |
400 mW |
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Insertion Loss (RF off) |
< 1 dB |
<1 dB |
< 1 dB |
< 1 dB |
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Extinction Ratio (RF off/RF on) |
7 dB |
7 dB |
7 dB |
7 dB |
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Modulation Bandwidth (-3 dB) |
7.5 MHz |
7.5 MHz |
4 MHz |
4 MHz |
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Optical Rise Time |
60 ns |
60 ns |
120 ns |
120 ns |
1Other optical fibre such as polarisation maintaining, and other connectors such as FC-APC are also available.
2Optical back reflection varies with fiber type and connectors.
3Modulator… first order diffracted beam is transmitted to output fiber, Attenuator… zero order beam is transmitted to output fibre.
4Operation at other RF frequencies is available. See Frequency Shifter/FCM Series product sheet.
5High extinction digital drivers are available. Laboratory and OEM drivers are available.
MODEL FCM SERIES FIBRE PIGTAILED Datasheet 
