Stabilized Biasing of Semiconductor Lasers

W i t h i n t h e p a s t few y e a r s digital lightwave c o m m u n i c a t i o n s y s t e m s h a v e b e c o m e a p r a c t i c a l reality. Several s y s t e m s h a v e b e e n d e m o n s t r a t e d for b o t h i n t e r o f f i c e t r u n k t r a n s m i s s i o n a n d t h e s u b s c r i b e r p l a n t . 1 - 4 I n t h e s e a p p l i c a t i o n s optical fiber s y s t e m s have t h e a d v a n t a g e s of i n h e r e n t l y large b a n d w i d t h s a n d electrical isolation. * Bell Laboratories. °Copyright 1983, American Telephone & Telegraph Company. Copying in printed form for private use is permitted without payment of royalty provided that each reproduction is done without alteration and that the Journal reference and copyright notice are included on the first page. The title and abstract, but no other portions, of this paper may be copied or distributed royalty free by computer-based and other informationservice systems without further permission. Permission to reproduce or republish any other portion of this paper must be obtained from the Editor.