Abstract
Metal slab waveguide reflectors integrated with very compact high index contrast
waveguides are described, designed and simulated. Reflection and transmission
characteristics of such reflectors are studied using 2-D and 3-D finite different time
domain (FDTD) simulations. It is shown that the reflection and transmission coefficients
can be controlled by adjusting the gap and length of metals of the reflector. Reflection
coefficients much higher than cleaved facets and even higher than metal coated facets
are possible. Reflection coefficients of almost 97% are achievable using only 1
<i>μ</i>m long reflectors. The sensitivity of obtained reflection as a function of
alignment errors indicates that more than 90% reflectivity is possible with 0.1
<i>μ</i>m alignment tolerance. It is also shown that very compact Fabry–Perot resonators
with FSR of 67.1 nm are possible using such reflectors. These resonators are directly
coupled to input and output waveguides and have 5 <i>μ</i>m active length and less than
7 <i>μ</i>m overall length including mirrors.
© 2011 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription