EXFO IQS-9100B Optical Switch for IQS-500/600 - Manual (Page 17)

Introducing the IQS-9100/9100B Optical Switch
Optical Switch 11
Basic Switching Principles
The IQS-9100-02-04 (2  4 model) is also a bidirectional switch. As
illustrated in the following figure, the IQS-9100-02-04 can be set to six
positions. In three of these positions, one or both input channels do not
transmit light to output ports.
O1
O2
O3
O4
I1
I2
O1
O2
O3
O4
I1
I2
I1
O1
O2
O3
O4
I1
I2
2 x 4 Optical Switch Principle
(IQS-9100 Optical Switch only)
I2
O1
O2
O3
O4
O1
O2
O3
O4
I1
I2 I1
I2
O1
O2
O3
O4
I1
I2
No continuity - Both ports No continuity - Port I1
No continuity - Port I2
I1
I2