The schematic of the homodyne configuration is shown below.
Following are the list of components
| Item |
Quantity |
Availability |
Part number |
Remarks |
| Laser (NPRO) |
1 |
Yes |
|
|
| Couplers (50/50) |
5 |
3 No's |
FOSC-2-64-50-L-1-H64F-2 |
Fiber type : Hi1060 Flex fiber |
| Delay fiber |
two loops of 80 m |
Yes |
PM 980 |
One set of fiber is now kept along the arm of the interferometer
|
| InGaAs PD (BW > 100 MHz) |
4 |
Yes |
NF1611 |
Fiber coupled (3 No's)
Free space ( 2 No's)
|
| SR560 |
3 |
Yes |
|
|
- The fiber mismatch between the couplers and the delay fiber could affect the coupling efficiency
|