Speckle-pattern contrast of semiconductor laser propagating in a multimode optical fiber
Abstract
Speckle patterns produced by coherent light from a GaA1As double-hetero-structure laser diode that has been transmitted through a multi-mode optical fiber are experimentally studied by analyzing the average contrast. It has been found that the speckle contrast observed in the far-field region is significantly lowered when the spectral width of a laser diode is as broad as a few tens of Angstroms.
- Publication:
-
Optics Communications
- Pub Date:
- April 1980
- DOI:
- Bibcode:
- 1980OptCo..33....4I
- Keywords:
-
- Coherent Light;
- Fiber Optics;
- Light Transmission;
- Propagation Modes;
- Semiconductor Lasers;
- Speckle Patterns;
- Aluminum Gallium Arsenides;
- Emission Spectra;
- Far Fields;
- Heterojunction Devices;
- Image Contrast;
- Lasing;
- Optical Communication;
- Optical Fibers;
- Probability Density Functions;
- Lasers and Masers