EXFO IQS-9100 Optical Switch for IQS-500/600 - Manual (Page 15)

Introducing the IQS-9100 Optical Switch
Optical Switch 9
Basic Switching Principles
Basic Switching Principles
The switch ports of 1 x N optical switches are numbered on the front panel,
while the common port is identified with a "C."
These switches are bidirectional. This means that the optical signal can
either enter through the common port and be directed toward any switch
port, or enter through any switch port and then be directed toward the
common port.
The IQS-9100-02-02 (2 × 2 model) is also a bidirectional switch. The two
positions for this switch are known as inserted state and bypass state.
Switch ports
Common port
1 x N Optical Switch Principle
INSERTED STATE BYPASS STATE
I1
I2
O1
O2
I1
I2
O1
O2
2 x 2 Optical Switch Principle