New calculations for coupling laser diode to multimode fiber
- 1 March 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 4 (3), 368-374
- https://doi.org/10.1109/JLT.1986.1074724
Abstract
A simple and useful method is presented for calculating characteristics of a laser diode to a multimode fiber coupling. Attenuation of higher order modes in multimode fiber is introduced into ray tracing. Maximum coupling efficiencies and misalignment tolerances of optical circuit components are computed for utilization of a relatively large spherical lens and combination of two relatively large spherical lenses. It is clarified that attenuation of higher order modes strongly affects both maximum coupling efficiency and misalignment tolerances. Agreement between theoretical and experimental coupling characteristics is greatly improved compared with the case for conventional ray tracing.Keywords
This publication has 7 references indexed in Scilit:
- Effects of fibre propagation loss on diode-laser–fibre couplingElectronics Letters, 1980
- Differential mode attenuation measurements in graded-index fibersApplied Optics, 1978
- Hybrid laser-to-fiber coupler with a cylindrical lensApplied Optics, 1977
- Light coupling problems for GaAs laser-multimode fibre couplingOptical and Quantum Electronics, 1976
- On the efficiency of coupling light from stripe-geometry GaAs lasers into multimode optical fibersJournal of Applied Physics, 1974
- Light coupling from a stripe-geometry GaAs diode laser into an optical fiber with spherical endJournal of Applied Physics, 1973
- Power Coupling from GaAs Injection Lasers into Optical FibersBell System Technical Journal, 1972