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An acousto-optic tunable filter (AOTF) is a solid-state, electronically-addressable random-access optical pass-band filter. It may be used to rapidly and dynamically select a specific wavelength from a broadband or multi-line source. When specific matching conditions between the acoustic and optical beams are met, diffraction will occur. As a result it is possible to electronically control key filter parameters such as wavelength, modulation-depth and even bandwidth, thus providing rapid (typically μs), dynamic, random access optical filtering.
Resolution bandwidths down to <0.1% are available with exceptional performance and with aperture sizes up to 25 mm and beyond. We have developed and patented techniques to allow us to offer options such as large-aperture imaging filtering, sideband suppression, and transmission of multiple discrete wavelengths.
We offer a range of AOTFs to suit a variety of applications. For scanning an entire image in wavelength at speeds sufficient for real-time video rate spectral imaging, high optical throughput is required. For this purpose devices with large aperture and/or field of view are recommended.

 
Our standard models are below:

 
Model Wavelength Active Aperture Resolution
AOTF 2837-31 351-430 nm 2.5 mm 1.0 nm
AOTF 3151-01 400-650 nm 2.5 mm 2.5 nm
TF525-250-6-3-GH19A 400-650 nm 3 mm 5 nm
TF525-250-4-6-GH57A 400-700 nm 6 mm 4 nm
TF560-280-1-5-NT2 420-700 nm 5 mm 0.3 nm
AOTF 2838-01 450-670 nm 2.5 mm 1.3 nm
AOTF 2885-02 450-670 nm 2.5 mm 2 nm
AOTF 2885-04 450-670 nm 2.5 mm 4 nm
TF625-350-2-11-BR1A 450-800 nm 11 mm 1.5 nm
TF850-500-1-3-PF3 600-1100 nm 3 mm 1.5 nm
TF850-500-10-6-GH58A 600-1100 nm 6 mm 10 nm
AOTF 2986-01 640-1100 nm 2.5 mm 5 nm
TF925-550-10-3-GH29A 650-1200 nm 3 mm 9 nm
TF950-500-1-2-GH96 700-1200 nm 2 mm 0.6 nm
TF950-500-0.3-3-GH98 700-1200 nm 3 mm 0.3 nm
TF950-500-1-5-NT2 700-1200 nm 5 mm 0.8 nm
TF1300-800-16-11-NO1A 900-1700 nm 11 mm 16 nm
TF2270-2560-5-5-GH65 990-3550 nm 5 mm 5 nm
AOTF 2996-01 1100-2000 nm 2.5 mm 12 nm
TF1650-1100-2-3-GH40 1100-2200 nm 3 mm 1.6 nm
TF1650-1100-9-3-GH30A 1100-2200 nm 3 mm 8 nm
TF1875-1250-10-6-GH59A 1 250-2500 nm 6 mm 10 nm
TF1900-1100-6-11-GH54A 1300-2500 nm 11 mm 6 nm
TF1900-1100-6-25-GH87A 1350-2450 nm 25 mm 6 nm
TF2000-1000-2-6-GH78 1500-2500 nm 6 mm 1.2 nm
TF2250-1500-12-7-GH61A 1500-3000 nm 7 mm 12 nm
TF2900-2200-5-3-GH40 1800-4000 nm 3 mm 5 nm
TF3000-2000-3-7-GH78 2000-4000 nm 7 mm 2.6 nm
TF3300-2200-xxx 2200-4400 nm Up to 15 mm Varies

 
STBR series free space tunable filters

The STBR series Dynamic Tunable Bandpass Filter adjusts the center wavelength of a narrow band of light over a 100 - 200nm range. It offers very high resolution of ~1.5nm and either single or simultaneous multiple wavelength selection. It is able to precisely and rapidly adjust the wavelength and intensity of the diffracted/filtered light by varying the frequency (see graph) and RF power. We offer both free-space and fiber-coupled configurations. AOTFs are used widely in numerous optical systems and applications, especially in industrial or process control near-infrared (NIR) spectroscopy applications.

Our standard models are below:

Model #

Spectral Range (nm)   

Drive RF Frequency (MHz)

Optical Aperture (mm)

Spectral Resolution (nm)

Acceptance Angle (deg.)

DE (%)

STBR-QZAF-.20-.40

200-400

90-250

2.0 x 10.0

1.2-7.0

4.4-7.2

20-30

STBR-TEAF_-.36-.52_

360-520

100-190

5.0 x 5.0

Available Standard Optical Apertures includes:
3.0x3.0
5.0x5.0
7.0x7.0
10.0x10.0
Other optical apertures are available upon request.

S

H

S

H

70

0.8-4.0

0.5-2.2

4.18-4.36

2.85-3.4

STBR-TEAF_-.40-.65_

400-650

220-110

1.0-5.1

0.5-2.5

4.8-6.2

3.4-4.4

70-90

STBR-TEAF_-.45-.70_

450-700

180-100

1.7-6.2

0.8-3.2

5.2-6.5

3.6-5.0

70-90

STBR-TEAF_-.55-1.0_

550-1000

155-70

1.5-8.3

0.9-5.0

4.3-5.9

3.2-4.5

70-90

STBR-TEAF_-.40-1.0-2CH*

400-1000

220-70

1.2-8.3

0.7-5.0

3.8-5.9

2.8-4.6

50-60

STBR-TEAF_-.80-1.6_

800-1600

130-60

S

H

EH

S

H

70-90

04-10

03-8

02-06

5.39-05.71

4.96-7.2

STBR-TEAF_-1.2-2.0_

1200-2000

90-50

06-16

06-12

04-09

6.78-08.56

5.30-7.5

25-35

STBR-TEAF_-1.5-3.0_

1500-3000

68-34

09-37

08-29

06-22

7.40-09.26

6.6-7.95

30

STBR-TEAF_-2.4-4.5_

2400-4500

40-20

25-83

18-65 14-48 8.43-11.38 7.3-9.72

40

STBR-TEAF_-0.8-1.6-UH

800-1600

190-90

S H

S

H

60

2-6

2.0-4.5

9.9-15.2

8.65-13.3

STBR-TEAF_-1.2-1.7-UH

1200-1700

120-80

5-7

3.0-5.0

11.9-14.68

9.47-12.88

50

STBR-TEAF_-1.5-2.4-UH

1500-2400

90-55

6-14

4.5-11.0

13.4-16.95

11.9-15.2

40

STBR-TEAF_-2.4-3.2-UH

2400-3200

55-40
 

14-25

11.0-17.0

16.95-19.8

15.2-17.29

35

STBR- TEAF_-3.2-4.5-UH

3200-4500

45-30

24-48

17.5-37.0

19.8-23.44

17.29-20.9

30

* Available in low or standard solution

Material:
TE Tellerium Dioxide (350-5000 nm)
QZ Quartz (SiO2)
Options:
S Standard Resolution
H High Resolution
EX Extra high Resolution
UH Ultra high Resolutiontandard resolution.

 
STBR series fiber coupled tunable filters

The STBR dynamic tunable bandpass filters are commonly used to dynamically select among different wavelength channels at the receiver end of dense WDM transmission systems. Other applications include tuning the center wavelength of broadband sources (such as white light sources or LEDs) in laboratory test and measurement systems. A typical band-pass shape of the selected light by AOTF filter is shown in the diagram above on the right.

 

 

Model # Wavelength Range (nm) Spectral Resolution (MHz) RF Frequency (MHz) Insertion Loss (dB)
STBR-TEAF-0.40-0.60-2FP 400-600 1-5 59-100 3-5
STBR-TEAF-0.45-0.7-S-2FP 450-700 3-9 100-180 3-5
STBR-TEAF-0.9-1.2-UH-2FP 900-1200 1 130-160 4-5
STBR-TEAF-1.2-1.7-UH/EH-2FP 1200-1700 1.0-2.5 80-120 ~5
STBR-TEAF-1.5-1.65-UH/EH-2FP 1500-1650 1.5-2.5 80-100 ~5

STBR-TEAF-1.1-2.1-S-2FP

1100-2100

4.0-15.0

50-100

5-7

 

Fiber Type:
Single-Mode (SM) fiber
Single-Mode Polarization Maintaining (SM/PM) fiber
Multimode (MM) fiber
Other fiber types are available on request.
Fiber Connectors:
FC, SC, LC, SMA, etc.
Other fiber connectors are available on request
Options:
S Standard Resolution
H High Resolution
EH Extra-high Resolution
UH Ultra-high Resolution
Other wavelengths are available upon request.

 
RF Drivers for STBR Series (free space or fiber coupled) tunable filter
Model STBR-VFI-XX-YY-SPS-A-C3 STBR-VFI-XX-YY-SPF-A-C3
Frequency range XX MHz ( matching the tunable filter requirements)
Frequency Step Size 4 Hz 10 Hz
Frequency Stability 0.010% (100PPM); +15oC to +75oC 0.015% ; +15oC to +75oC
Frequency Switching Speed 15ms typ. (from fmin to fmax) 8ns
Minimum Duration of Each step N/A 32ns for sweeping mode
1ms for hopping mode (for <300 hops)
15ms for hopping mode (>300 hops)
Power output Optimised for max performance of the tunable filter device
Power control N/A 12 bit attenuator with 25dB range (min.)
Modulation None (TTL or Analog optional)
Enclosure The unit will be packaged in a 190 mm (7.5 inch) wide by 90 mm (3.5 inch) high by 220 mm (8.75 inch) deep instrument case. The rear panel heat sink increases the depth to 270 mm (10.5 inches) maximum. The size is exclusive of connectors. A detachable AC line cord and RF cable are provided.
Environmental Nominal Laboratory conditions: The maximum ambient temperature is +35 C. The unit is not sealed against moisture or condensing humidity.
Output Impedance 50 ohms
Output Connectors SMA jack on front panel
 

Sintec Optronics Pte Ltd

10 Bukit Batok Crescent #07-02 The Spire Singapore 658079

Tel: +65 63167112 Fax: +65 63167113  

E-mail: sales@sintec.sg sales@SintecOptronics.com

URL: http://www.sintec.sghttp://www.SintecOptronics.com

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