2x2 SN Type Fiber Switch-1550 nm Butterfly DFB Laser Diode which is used as a

which is used as a polarizer

The coupler is a 1x2 1300 nm/1550 nm 50/50 filter-type coupler

The coupler 1x2 multi-mode coupler

and wavelength

The coupler is a 2x2 1064 nm 50/50 single window coupler

2x2 SN Type Fiber Switch-1550 nm Butterfly DFB Laser Diode which is used as aThere are two drive coils inside the switch which are used individually to set the switch in each of the two possible optical states to change the state of the switch, apply a 5 VDC drive pulse of approximately 20 m sec or longer on the electrical drive pins as indicated in the table below. Once the switch has been moved to the new position it will remain there until a drive pulse appears on the drive coil for the other path. Typical operating current