A coarse wavelength division multiplexer is designed on a silicon-on-insulator waveguide using the Mach–Zehnder interferometers with novel multimode interface–periodically segmented waveguide couplers and segmented waveguide arms. It is viable for metro and access applications, since it can be inexpensive and provide easy fabrication, compact size, and good output performance. As a design example, the channel spacing of the demultiplexer is chosen to be 24.5 nm for applications to the 10-Gigabit Ethernet. The simulation results show that the wide-passband demultiplexer can have insertion loss less than 2.3 dB and crosstalk better than 18 dB.
© 2003 Optical Society of America
(060.4510) Fiber optics and optical communications : Optical communications
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
Yen-Juei Lin, San-Liang Lee, and Chiu-Lin Yao, "Four-Channel Coarse-Wavelength Division Multiplexing Demultiplexer With a Modified Mach-Zehnder Interferometer Configuration on a Silicon-on-Insulator Waveguide," Appl. Opt. 42, 2689-2694 (2003)