TY - JOUR
AU - Shankar, P. Mohana
AB - On‐fiber devices are fabricated by removing the cladding over a short length of the multimode fiber and replacing it with an active medium like electrooptic or magnetooptic material. When a field is applied, the index of this modified cladding goes up, leading to a redistribution of modal amplitudes, which may or may not be accompanied by optical power loss due to radiation modes. Significant optical power loss occurs when the induced index change is large while modal redistribution of amplitudes takes place with negligible power loss when the index change is very small. This modal redistribution has been investigated and expressions for the amplitude coupling coefficient related the modal amplitudes before and after the application of the field are derived. These coupling coefficients have been evaluated as a function of the induced index change in the cladding. The results indicate that this modal redistribution may be used as a sensing mechanism.
TI - Mode coupling in on‐fiber devices
JF - Microwave and Optical Technology Letters
DO - 10.1002/mop.4650010805
DA - 1988-10-01
UR - https://www.deepdyve.com/lp/wiley/mode-coupling-in-on-fiber-devices-n2xfByO0GU
SP - 290
EP - 293
VL - 1
IS - 8
DP - DeepDyve
ER -