Article

Extremely small multimode-interference coupled triangular resonator with sharp angle of incidence.

Microwave and Lightwave Telecommunications Lab., School of Electrical and Electronics Engineering, Chung-Ang University, Dongjak-ku, Seoul, 156-756, Korea.
Optics Express (impact factor: 3.59). 01/2009; 16(25):21053-8. pp.21053-8
Source: PubMed

ABSTRACT Novel triangular ring resonators combining extremely small multimode-interference (MMI) coupler, low loss total internal reflection (TIR) mirrors, and semiconductor optical amplifiers are reported for the first time. The MMI length of 90 microm is among the shortest reported. The incidence angle of the TIR mirror inside the resonator is 22 degrees. A free-spectral range of approximately 2 nm is observed near 1550 nm along with an on-off ratio of 17 dB. The triangular resonators with a sharp angle are very attractive components due to their promise of compact size and high levels of integration. Therefore, large numbers of resonators can be integrated on a chip to increase functionality in future optical wavelength division multiplexing system.

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Keywords

90 microm
 
compact size
 
future optical wavelength division multiplexing system
 
incidence angle
 
increase functionality
 
large numbers
 
low loss total internal reflection
 
Novel triangular ring resonators
 
on-off ratio
 
resonator
 
resonators
 
semiconductor optical amplifiers
 
triangular resonators