TY - JOUR
T1 - A novel compact wavelength-division multiplexer using highly dispersive waveguide-to-waveguide coupling
AU - Tsai, Tzong Yow
AU - Lee, Zhi Cheng
AU - Fang, Yen Cheng
AU - Cha, Ming Hong
N1 - Funding Information:
This work was financially supported by the National Science Council of Taiwan (Project No. NSC 94-2215-E-006-048).
PY - 2006/7/15
Y1 - 2006/7/15
N2 - A novel compact wavelength-division multiplexer using highly dispersive waveguide-to-waveguide coupling is designed, simulated and analyzed. The device consists of two very close single-moded waveguides that are periodically connected to form a mode-dependent dispersive grating. It is demonstrated that the wavelengths over the edges of the photonic band gap contributed by the grating can be separated in a very short propagation distance. Using the finite-difference time-domain method, the result shows that the wavelengths of 1570 and 1530 nm are separated by the grating in a coupler length of 57 μm which is much shorter than the required length of about 340 μm without grating assistance. The channel contrast of 20 dB and the insertion loss about 2 dB are achieved.
AB - A novel compact wavelength-division multiplexer using highly dispersive waveguide-to-waveguide coupling is designed, simulated and analyzed. The device consists of two very close single-moded waveguides that are periodically connected to form a mode-dependent dispersive grating. It is demonstrated that the wavelengths over the edges of the photonic band gap contributed by the grating can be separated in a very short propagation distance. Using the finite-difference time-domain method, the result shows that the wavelengths of 1570 and 1530 nm are separated by the grating in a coupler length of 57 μm which is much shorter than the required length of about 340 μm without grating assistance. The channel contrast of 20 dB and the insertion loss about 2 dB are achieved.
UR - http://www.scopus.com/inward/record.url?scp=33745644006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33745644006&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2006.01.035
DO - 10.1016/j.optcom.2006.01.035
M3 - Article
AN - SCOPUS:33745644006
SN - 0030-4018
VL - 263
SP - 197
EP - 200
JO - Optics Communications
JF - Optics Communications
IS - 2
ER -