Multimode Scrambler – SpeckleFree™
Speckle patterns from a multimode fiber can cause problems in many applications that require uniform, stable light distributions at the fiber output. The MMS-201 multimode scrambler, a superior replacement for the MMS-101, is specially designed to solve this problem. Based on a General Photonics proprietary technology, the MMS-201 effectively randomizes multimode speckle patterns over time at a high frequency over 20kHz. The light distribution at the output appears uniform and stationary when viewed by cameras or detectors with averaging times >80 ms. In addition, the all-fiber optical path minimizes the scrambler’s insertion loss. The fiber used for this device undergoes a special surface treatment to prevent breakage under stress, ensuring high device reliability. The MMS-201 can improve performance in various applications including DNA sequencing, multimode fiber sensing and test and measurement of multimode fiber devices.
Applications:
DNA sequencing
Multimode fiber sensing
Test and measurement
Unique Features:
Compact
Reliable
High speed
Efficient
Can be made with custom fiber
Preliminary Specifications
Operating Wavelength Range
530 to 1630 nm
Fiber Type
50/125 µm step index standard, others optional
Fiber NA
0.2
Scrambling Frequency
22 ±1 kHz
Insertion Loss
≤1 dB at 635nm, including connectors
Return Loss
>50 dB (with PC connector)
>55 dB (with APC connector)
Scrambling Efficiency1, 2
> 80% (effective power)
Flatness3
< 20% typical
Ripple4
< 10% typical
Optical Power Handling
400 mW
Power Supply
+24VDC/1.5A
Enable/Disable Signal
TTL high = enabled
TTL low = disabled
Operating Temperature
10 to 40°C
Storage temperature
−20 to 70°C
Dimensions
23 ( L) x 10.5 (W) x 6.5 (H) cm
*Notes:
1.Scrambling efficiency is defined as (Light energy ≥ 80% of maximum intensity/Total energy)(area over which intensity is ≥ 80% of maximum intensity /total core area).
2.Measured over 80 ms integration time at 635 nm.
3.Flatness is defined as(maximum intensity – minimum intensity) expressed as a percentage of maximum intensity, where the maximum and minimum are defined over the center 80% of the fiber core area.
4.Ripple is defined as the maximum peak-to valley difference of intensity fluctuations, expressed as a percentage of maximum intensity, where the fluctuation differences and maximum intensity are measured within the center 80% of the fiber core area.Ordering Information:
Typical Performance Data:
Figure 1. Far-field illumination pattern with scrambler disabled. Figure 2. Far-field illumination pattern with scrambler enabled.
Figure 3. 2D and 3D beam profiles with scrambler disabled. Figure 4. 2D and 3D beam profiles with scrambler enabled
Figure 5. X and Y cross-sectional beam profiles with scrambler disabled. Figure 6. X and Y cross-sectional beam profiles with scrambler enabled.
Note: Data in Figures 3-6 taken at 635nm with 80 ms integration time.
Mechanical Dimensions (in inches):
商品属性 [波长] 530 to 1630 nm