Fiber Optic Switches, Single-Mode Fiber Optical Switch

Fiber optic switches (single-mode fiber optical switches) are passive devices possessing two or more ports which selectively transmits, redirects or blocks optical power in an optical fiber transmission line. They can route optical signals without electro-optical or optoelectrical conversion. These fiber optic switches offer an effective way to provide flexibility in optical network connectivity. Lfiber’s optical switches operate over the visible VIS spectrum and NIR (or IR) spectrum, typically from 430 nm to 2000 nm. They feature high reliability, low insertion losses, and minimal crosstalk.

This page is to introduce the single-mode fiber optic switches controlled by TTL communication protocol. For the RS-232 or USB control version, click Single-Mode Fiber Optical Switch (RS232/USB).

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About the Fiber Optic Switches (Fiber Optical Switch)

Principles of the Fiber Optical Switches VIS NIR Single-Mode Fiber Optic Switches

Inside the single-mode fiber optic switches, the mechanical movement of some parts controls the direction of the light signal or changes states between transmitting and cutting off the light signal.

This fiber optic switches are stepping motor driven. The main components inside the switches are stepping motors and fiber optic collimators. The operation is based on the motion of the stepping motor relative to the fixed collimator, see the right figure.

VIS-NIR Spectrum: Single-Mode Fiber Optic Switches Fiber Switch Fiber Optical Switch

The typical operating wavelengths of the single-mode fiber optical switches include, but are not limited to, 405 nm, 444 nm, 445 nm, 447 nm, 450 nm, 454 nm, 457 nm, 460 nm, 462 nm, 465 nm, 470 nm, 473 nm, 480 nm, 484 nm, 488 nm, 490 nm, 491 nm, 501 nm, 505 nm, 509 nm, 510 nm, 514 nm, 515 nm, 520 nm, 522 nm, 523 nm, 526 nm, 530 nm, 532 nm, 540 nm, 543 nm, 550 nm, 552 nm, 555 nm, 556 nm, 561 nm, 577 nm, 588 nm, 589 nm, 593.5 nm, 594 nm, 600 nm, 604 nm, 607 nm, 612 nm, 622 nm, 627 nm, 630 nm, 632 nm, 633 nm, 635 nm, 637 nm, 638 nm, 640 nm, 642 nm, 647 nm, 650 nm, 655 nm, 656 nm, 660 nm, 665 nm, 666 nm, 670 nm, 671 nm, 680 nm, 685 nm, 688 nm, 689 nm, 690 nm, 698 nm, 705 nm, 721 nm, 730 nm, 750 nm, 760 nm, 770 nm, 780 nm, 785 nm, 786 nm, 790 nm, 793 nm, 795 nm, 800 nm, 808 nm, 810 nm, 825 nm, 830 nm, 835 nm, 845 nm, 850 nm, 852 nm, 860 nm, 879 nm, 880 nm, 885 nm, 905 nm, 914 nm, 915 nm, 930 nm, 935 nm, 938 nm, 940 nm, 946 nm, 960 nm, 965 nm, 975 nm, 976 nm, 980 nm, 1030 nm, 1035 nm, 1040 nm, 1047 nm, 1053 nm, 1055 nm, 1060 nm, 1064 nm, 1080 nm, 1085 nm, 1105 nm, 1112 nm, 1120 nm, 1122 nm, 1177 nm, 1208 nm, 1268 nm, 1275 nm, 1300 nm, 1310 nm, 1313 nm, 1319 nm, 1320 nm, 1342 nm, 1380 nm, 1392 nm, 1410 nm, 1413 nm, 1444 nm, 1450 nm, 1470 nm, 1475 nm, 1480 nm, 1490 nm, 1528 nm, 1532 nm, 1540 nm, 1550 nm, 1558 nm, 1560 nm, 1565 nm, 1570 nm, 1573 nm, 1590 nm, 1600 nm, 1605 nm, 1610 nm, 1625 nm, 1645 nm, 1700 nm, 1710 nm, 1720 nm, 1750 nm, 1850 nm, 1870 nm, 1900 nm, 1910 nm, 1920 nm, 1940 nm, 1950 nm, 1990 nm, and 2000 nm.

Single Mode Fiber Optic Switches

SM Fibers, VIS-NIR Spectrum, TTL Version

Fiber Optic Switches Fibre Optical Switch

USER MANUAL

FEATURES OF SM FIBER OPTIC SWITCHES (SINGLE-MODE OPTICAL SWITCH)

Low Insertion Loss and High Reliability
Parallel Interface (TTL)
Modularized Design
Functions of Breakdown Self-checking and Alarm Warning (TTL)

APPLICATIONS OF SINGLE-MODE FIBER OPTIC SWITCHES (SM OPTICAL SWITCH)

Optical Signal Switching and Routing
Optical Network Monitoring
Testing of Fiber Optic Component
OTDR Testing

Specifications of the Fiber Optic Switches (Single-Mode Optical Switch)
Number of Channels (N)	1×N (N ≤ 16) or other channel counts on request
Fiber Type	Single-mode fibers
Insertion Loss (dB)	≤ 2.0 dB @ 430-670 nm ≤ 1.5 dB @ 780-1250 nm ≤ 1.0 dB @ 1260-1590 nm ≤ 1.5 dB @ 1600-2000 nm
Operating Wavelength Range (nm)	405-2000 nm on request
Testing Wavelength (nm)	405, 450, 480, 532, 650, 780, 850, 980, 1310, 1490, 1550, 1625, 1650, etc.
Return Loss (dB)	≥ 50
Crosstalk (dB)	≥ 70
Wavelength Dependent Loss (dB)	≤ 0.25
Temperature Dependent Loss (dB)	≤ 0.25
Repeatability (dB)	≤ 0.02
Lifetime (cycles)	≥ 10 million
Switching Time (ms)	≤ 8 (adjacent channel)
Power Handling (mW)	≤ 500
Power Supply	5V / 500mA
Control Mode	TTL
Connector	FC, LC, SC, ST, MPO, etc.
Operating Temperature (℃)	-20 to +70
Storage Temperature (℃)	-40 to +85
Dimension (mm)	80 × 40 × 32 mm (channel amount ≤ 8) 135 × 64 × 32 mm (channel amount ≤ 16)

Notes:

For requests please see the ordering information section and specify the number of channels, operating wavelengths, control mode, connector types, etc.
Typically, the operating wavelengths of the single-mode fiber optic switches include, but are not limited to, 405nm, 444nm, 445nm, 447nm, 450nm, 454nm, 457nm, 460nm, 462nm, 465nm, 470nm, 473nm, 480nm, 484nm, 488nm, 490nm, 491nm, 501nm, 505nm, 509nm, 510nm, 514nm, 515nm, 520nm, 522nm, 523nm, 526nm, 530nm, 532nm, 540nm, 543nm, 550nm, 552nm, 555nm, 556nm, 561nm, 577nm, 588nm, 589nm, 593.5nm, 594nm, 600nm, 604nm, 607nm, 612nm, 622nm, 627nm, 630nm, 632nm, 633nm, 635nm, 637nm, 638nm, 640nm, 642nm, 647nm, 650nm, 655nm, 656nm, 660nm, 665nm, 666nm, 670nm, 671nm, 680nm, 685nm, 688nm, 689nm, 690nm, 698nm, 705nm, 721nm, 730nm, 750nm, 760nm, 770nm, 780nm, 785nm, 786nm, 790nm, 793nm, 795nm, 800nm, 808nm, 810nm, 825nm, 830nm, 835nm, 845nm, 850nm, 852nm, 860nm, 879nm, 880nm, 885nm, 905nm, 914nm, 915nm, 930nm, 935nm, 938nm, 940nm, 946nm, 960nm, 965nm, 975nm, 976nm, 980nm, 1030nm, 1035nm, 1040nm, 1047nm, 1053nm, 1055nm, 1060nm, 1064nm, 1080nm, 1085nm, 1105nm, 1112nm, 1120nm, 1122nm, 1177nm, 1208nm, 1268nm, 1275nm, 1300nm, 1310nm, 1313nm, 1319nm, 1320nm, 1342nm, 1380nm, 1392nm, 1410nm, 1413nm, 1444nm, 1450nm, 1470nm, 1475nm, 1480nm, 1490nm, 1528nm, 1532nm, 1540nm, 1550nm, 1558nm, 1560nm, 1565nm, 1570nm, 1573nm, 1590nm, 1600nm, 1605nm, 1610nm, 1625nm, 1645nm, 1700nm, 1710nm, 1720nm, 1750nm, 1850nm, 1870nm, 1900nm, 1910nm, 1920nm, 1940nm, 1950nm, 1990nm, and 2000nm. Other operating wavelength requirements are also available on request.
Standard port/channel counts of the fiber optic switches: 1×2, 1×4, 1×8, 1×16, 1×24, 1×32, 1×48, 1×64, 1×128, etc. Other channel counts are available upon request.
The fiber optic switches are customizable and the specifications are subject to change without notice.
For product customization or special requirements, please contact our sales representative.

Pin Configurations of the Fiber Optic Switches (Single-Mode Optical Switch)

ZH 1.5mm 9P or DB-9 Male Connector

Pin No.	I / O	Signal	Descriptions
1	Input	D0	D0-D3 represent channel selection Bit0-Bit3; D0 is low; D3 is high.
2	Input	D1
3	Input	D2
4	Input	D3
5	Input	RESET	TTL, Low level reset to channel 0. High level means channel selection bits are effective.
6	Out	READY	TTL, Ready (High = not ready, Low = ready)
7	Out	ERROR	TTL, Error OR Failure , (High = error, Low = no error)
8	Power	GND	Ground
9	Power	VCC	5.0±5% VDC Power Supply (Max. 500mA)

Channel Selection Table of the Fiber Optic Switches (Single-Mode Optical Switch)
Channel	D0	D1	D2	D3	RESET
COM-0	x	x	x	x	0
COM-1	0	0	0	0	1
COM-2	1	0	0	0	1
COM-3	0	1	0	0	1
...	...	...	...	...	1
COM-14	1	0	1	1	1
COM-15	0	1	1	1	1
COM-16	1	1	1	1	1

Dimensions of the Fiber Optic Switches (Single-Mode Optical Switch)

Channel Amount (N) ≤ 8

Single-Mode Fiber Optical Switch 1750nm 786nm 790nm 730nm 1122nm 1177nm 1208nm 1268nm 880nm 885nm 914nm 965nm 1532nm 1573nm 1600nm Fibre Optic Switches 1700nm 1275nm 1313nm 1319nm 1320nm 1342nm 1380nm

Fiber Optic Switches 594nm 604nm 607nm 612nm 501nm 505nm 510nm 552nm 588nm 593.5nm 622nm 689nm 690nm 698nm 555nm 556nm 577nm 627nm 638nm 670nm 680nm 705nm 721nm 484nm 491nm Single-Mode Fibre Optical Switch

Fiber Optic Switches with ZH connector (1.5mm Pitch, 9 Pin)

Channel Amount (N) ≤ 16

Fiber Optic Switches Light Switching For Optical Systems Channel Single-Mode Optical Fiber Switcher

Optical Fiber Switch Single-Mode Fibre Optic Switches

Fiber Optic Switches with DB-9 Male Connector

Optical Route of the Fiber Optic Switches (Single-Mode Optical Switch)

Single-Mode Fiber Switch Fiber Optical Switches 405 447 454 457 462 465 470 473 480 488 514 515 520 522 523 526 530 540 543 550 561 589 600 637 639 640 642 655 656 660 665 666 671 685 845 852 860 946 975 1035 1055 1060 1410 1475 1480 1528 1558 1565 1570 1605 1610 1645 1710 1850 1870 1900 1910 1920 1940 1990 2000 nm

Control Chart of the Fiber Optic Switches (Single-Mode Optical Switch)

Fiber Optic Switches Fiber Channel Optical Switcher VIS-NIR Single-Mode Fiber Switches For Optical Systems

Timing Diagram of Fiber Optic Switches (Single-Mode Optical Switch)

Fiber Optic Switches 4 Port 8 Port 12 Port 16 Port Fiber Optical Switch 24 Port 32 Port 48 Port 64 Port 128 Port

Operating Instructions

(1) Lfiber’s single-mode fiber optic switches have TTL/CMOS parallel interface. To distinguish from each other, there is a mark of a number for each of the connectors. The switches are bidirectional in operation.

(2) The fiber optic switches can be controlled via TTL/CMOS parallel interface with a DB-9 connector. See the Pin Specifications and Control Chart to set the connection correctly before operations.

(3) When supply power to the switch, it will reset the 0 channel. When /READY and ERROR signals become low, the switch is ready for the data or the reset signal.

(4) Channel Selection: Set /READY signal high and then connect the data lines to select the channel. Whenever the data exceed N (the max channel of the switch), the ERROR signal becomes high, until a correct data occurred or RESET signal is given. The fiber optic switch will monitor the data lines, and switch to the position specified by the data lines.

(5) Reset Operation: Set /RESET signal low, and the device will switch to the open position. /READY and ERROR signals become low after reset operation. Never try to keep /RESET signal low all the time otherwise the fiber optic switches will repeat the reset operation until the signal goes high. The low level on the /RESET pin should not exceed 20ms.

(6) The /READY signal keeps high when the fiber optic switches are in operation (switching) and it becomes low after operations. The ERROR signal keeps high when an invalid data appears on the data line and it becomes low after reset operation or input a valid data. To understand the device’s operation situation, the /READY and ERROR signal should be monitored although D0~D3 data lines are enough for the simplest application.

Ordering Information for the Fiber Optic Switches (Single-Mode Optical Switch)
Number of Channels	Operating Wavelength	Fiber Type	Control Mode	Fiber Pigtail Length	Connector
1x2	444 nm	Single-mode fibers	TTL	0.50 m	None
1x4	450 nm			1.00 m	LC/UPC
1x8	460 nm			1.50 m	LC/APC
1x16	532 nm			Custom …	SC/UPC
Custom …	630 / 632 / 633 nm				SC/APC
	635 / 637 nm				FC/UPC
	650 nm				FC/APC
	780 nm				MPO Male
	793 nm				MPO Female
	830 nm				Custom …
	835 nm
	850 nm
	905 nm
	915 nm
	935 nm
	940 nm
	980 nm
	1064 nm
	1080 nm
	1300 nm
	1310 nm
	1450
	…
	2000 nm
	Custom …