Which category/ies of wavelength division multiplexer comprise/s two 3dB couplers where the splitting of an incident beam takes place into two fiber paths, followed by the recombination with second 3-dB coupler?
A. Interference filter based devices
B. Angular dispersion based devices
C. Mach-Zehnder Interferometers
D. All of the above
Answer:C
Which category/ies of wavelength division multiplexer comprise/s two 3dB couplers where the splitting of an incident beam takes place into two fiber paths, followed by the recombination with second 3-dB coupler?
A. Interference filter based devices B. Angular dispersion based devices C. Mach-Zehnder Interferometers D. All of the above