Title :
Length reduction of tapered N x N MMI devices
Author :
Levy, David S. ; Scarmozzino, Robert ; Osgood, Richard M., Jr.
Author_Institution :
Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
The length of N/spl times/N multimode interference-based (MMI) devices scales as the square of the MMI region width, and as a result, the use of these structures for large-N applications can require large chip areas. We discuss the N/spl times/N applications of a recently proposed MMI structure that has smaller device dimensions than conventional multimode interference structures. Numerical simulations of such structures and design rules are presented. Limitations on device performance are discussed.
Keywords :
integrated optics; integrated optoelectronics; light interference; optical communication equipment; optical design techniques; optical elements; optical waveguides; N/spl times/N multimode interference-based device; design rules; device dimensions; device performance; integrated optoelectronic circuits; large chip areas; multimode interference structures; tapered N/spl times/N MMI device length reduction; Equations; Finite difference methods; Interference; Power generation; Propagation constant; Refractive index;
Journal_Title :
Photonics Technology Letters, IEEE
