Release Time:2022-07-05  Hits:

Indexed by: Journal Article

Date of Publication: 2022-06-30

Journal: 光学学报

Institution: 光电工程与仪器科学学院

Volume: 30

Issue: 3

Page Number: 782-786

ISSN: 0253-2239

Abstract: The delay time response function of the waveguide microring resonator is
   deduced from its optical-field transmission function. The influence of
   microring waveguide loss on the delay time characteristics is analyzed
   and the result shows that the microring resonator-based optical delay
   line applied in the optically controlled phased array antenna system
   should be at over-coupled condition, which means that the coupling
   coefficientkappaand the microring waveguide loss factorgammashould
   satisfy the relation of kappa>(1-gamma).According to the criterion of
   delay time ripple guality factorepsilon, the method of optimized design
   of the microring resonator-based optical delay line is established, and
   the optimized structural parameters of cascaded four microring
   resonators for target delay time of 0.6 ns, bandwith of 2 GHz, and delay
   time ripple guality factor less than 1*10~(-3) ns~2 are obtained.

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