Name: MMS-003 Miniature Multimode Scrambler OEM Module
Brand: Luna
SKU: MMS-003

Overview

Speckle patterns from a multimode fiber can cause problems in applications that require a uniform, stable light distribution at the fiber output. The Luna MMS-003 is a miniature multimode scrambler designed to randomize multimode speckle patterns over time at a scrambling frequency of 725 kHz.

When viewed by cameras or detectors with averaging times greater than 80 ms, the light distribution at the output appears uniform and stationary. The all-fiber optical path keeps the scrambler's insertion loss low.

The MMS-003 is supplied as an OEM module on a reduced-size driver board without an enclosure, with 1 m pigtails of 50/125 µm step index multimode fiber terminated in FC/PC or FC/APC connectors. It runs from a 24 VDC supply and begins scrambling as soon as power is applied; a TTL enable/disable input allows scrambling to be switched without disconnecting the supply.

Typical uses include DNA sequencing, multimode fiber sensing, optical imaging, and testing and measurement of multimode fiber devices.

Key Features

Compact
Reliable
High speed
Efficient
Speckle randomization at 725 kHz
All-fiber optical path for low insertion loss
TTL enable/disable control without disconnecting power

Specifications

Optical Characteristics

Operation wavelength	600 - 800 nm
Insertion loss	1.0 dB Max. Web page states ≤1 dB at 635nm, including connectors
Return loss	-50 dB
Scrambling frequency	725 ± 5% kHz Overview text describes the frequency as over 725 kHz
Scrambling efficiency	>80 % With FC/PC connector; defined as light energy ≥ 80% of maximum intensity / total energy. Web page: >80% (effective power)
Flatness	< 20 % Typical; measured over 80 ms integration time at 635 nm, over the center 80% of the fiber core area
Ripple	< 10 % Typical; peak-to-valley intensity fluctuation within the center 80% of the fiber core area
Optical power handling	400 mW

Fiber

Input fiber	50/125µm Step Index Multimode Fiber
Output fiber	50/125µm Step Index Multimode Fiber
Pigtails	900um loose tube on fiber
Pigtail length	100cm +/- 5cm
Fiber connector	FC/PC, FC/APC

Electrical

Power supply voltage	DC 24 ± 2% V
Working current	0.4 ± 0.1 A
Enable/disable control (EN1)	TTL control signal, required drive current >1mA@100kΩ Default with no input is enabled
OH connector voltage	up to 68Vpp High-frequency AC high voltage present on OH connector and peripheral circuits during operation

Connectors

Power connector (PW IN1)	Würth Elektronik 64900211122 Pin 1: +24 VDC; Pin 2: GND
Power mating connector	Würth Elektronik 649002013322
Enable/disable connector (EN1)	TE Connectivity AMP 5-103669-1 Pin 1: TTL control; Pin 2: GND
Enable/disable mating connector	5-103956-1

Physical and Operating Conditions

Operating temperature	10 - 60 °C Optical head surface temperature should be kept < 60 °C with airflow around the module
Storage temperature	−20 - 70 °C
Weight	360 g
Chassis air flow requirement	≥ 10CFM Forced air cooling required when the module is used in a chassis

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Options & Accessories

Option	Description
MMS-003-50S-9-1-FC/PC	MMS-003 OEM module with FC/PC connectors — Miniature multimode scrambler OEM module, 50µm core step index MM fiber, scrambling efficiency 80% at 635nm over 80 ms integration time, reduced size board, no enclosure. Pigtails: 1m long with 900µm jacket, FC/PC connectors
MMS-003-50S-9-1-FC/APC	MMS-003 OEM module with FC/APC connectors — Miniature multimode scrambler OEM module, 50µm core step index MM fiber, scrambling efficiency 80% at 635nm over 80 ms integration time, reduced size board, no enclosure. Pigtails: 1m long with 900µm jacket, FC/APC connectors