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PM MEMS 1x4 Optical Switch

Product Details

Ⅰ. Product introduction

1. Application

MFSW-1X4 optical switch type single mode optical switch module is a light path switching function of the device, which has the following purposes:

Multiple optical monitoring in optical transmission system

LAN multi-light source / detector automatic transfer, light sensing multi-point dynamic monitoring system

Optical test system for optical fiber, optical devices, network and field engineering cable test

Optical devices installed

2. Product Features

Low loss, high reliability

   l Simple parallel or serial port interface control

   l Modular design

3. Product performance

Working wavelength1550±20nm

Fiber typePM15509/125

Connector typeFC/APC(Slow axis alignment)

Fiber length500±50 mm

Insertion loss≤1.2dB

Return Loss≥50dB

Polarization dependent loss≤0.15 dB

Wavelength dependent loss≤0.3 dB

Temperature dependent loss≤0.3 dB

   l Min. Extinction Ratio: ≥15dB

Repeatability≤±0.05dB

Channel crosstalk≥50dB

Switching time≤15ms

Optical power≤500mW

Durability≥10 billion 

Operating temperature-5+70℃

Storage temperature:-40~+85℃

Power supplyDC  5V ± 5%


Ⅱ.   Dimension Chart



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Figure 1 Dimensions



When installing the optical switch module, the optical fiber must not be bent excessively (refer to FIG. 2), so as not to affect the performance index of the optical switch module


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Figure 2 Optical installation diagram



Ⅲ. Pin Configuration

4. Specification Digital Interface Electrical


ELECTRICAL INTERFACE

SPECIFICATION

1

Supply Voltage

5V ± 5%

2

Power Consumption

< 500 mW

3

Electrical control method

UART or Parallel mode (TTL level)

 

5. Digital Interface Pin Assignment

PIN #

NAME

DESCRIPTION

1

NC

No physical internal connection

2

VCC

Power Supply (5V)

3

STROBE

Falling Edge Active (input)

4

GND

Signal Ground

5

D0

Data 0 (input)

6

D1

Data 1 (input)

7

D2

Data 2 (input)

8

D3

Data 3 (input)

9

UART TX

UART Transmit (output)

10

UART RX

UART Receive (input)

11

GND

Case Ground

12

RDY

Ready (output), used for internal debugging

13

MODE

0=TTL, 1=UART (input)

14

RESET

0=Reset (input)

Note:

1. The digital interface is LVTTL level.

2. Input control signal threshold level: Input logic high: 2V min. Input logic low:0.8V max

3. All unused inputs of the device must be held at logic high or GND to ensure proper device operation.


Ⅳ. Parallel mode

1. Control Truth Table

Select CH

PIN#

Comment

D3

D2

D1

D0


Default

N/A

N/A

N/A

N/A

Default CH is off(*)

P1

0

0

0

0


P2

0

0

0

1


P1

0

0

1

0


P2

0

0

1

1


(*1)When power(VCC)is removed from the switch, it will go go the off(dark) position.

 

2. Control Truth Table

Symbol

Parameter (TTL mode)

Min.

Typ.

Max.

Unit

T1

Data setup time

1



ms

T2

Data hold time

10



ms

T3

Strobe pulse width

1



ms

SWT

Optical output switching



50

ms


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3. Reset Control Timing

Symbol

Parameter

Min.

Typ.

Max.

Unit

RST

Reset pulse width

100



ms

MCU_RDY

MCU Ready

20



ms

RST_OFF

Reset Power OFF



30

ms

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Power/STROBE Sequence

 

Symbol

Parameter (TTL mode)

Min.

Typ.

Max.

Unit

PWR_UP_RDY

Power up Ready

200



ms

CMD_CYC

Command Cycle

50



ms

 

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Ⅴ. Precautions

Before using the optical switch module, in order to avoid any damage to the optical switch module, please read the following rules carefully:

1. Before use, clean the optical fiber end of the connector with alcohol cotton. Please take a dust cap when not in use to prevent the dust or other dirt from polluting or damaging the fiber end face. Fiber end damage or contamination will affect the optical switch module performance.

2. Do not pull, fold and twist the optical fiber, so as to avoid fiber damage.

3. Detailed pin definition for control interfaces, to ensure that the connection is correct. After determining the connection is correct, then power-up operation.

4. When the external circuit needs to be changed, please turn off the power, then disconnect the module control line, the control line is prohibited with hot-swappable.

5. Do not look directly at the fiber end when the optical switch module has an optical signal input. Laser radiation is not visible, but will cause harm to the human eye!

6. The device should be fireproof, shockproof, to avoid storage and work in an over-humid environment.

7. The device is a precision optical device, shall not be disassembled, so as not to damage.



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