Title :
Compact and Colorless PLC-Type 1-Bit Delay Line Interferometer for DQPSK Demodulator
Author :
Kawashima, Hiroshi ; Nara, Kazutaka
Author_Institution :
Furukawa Electr. Co. Ltd., Ichihara, Japan
fDate :
6/1/2012 12:00:00 AM
Abstract :
A compact and colorless planar lightwave circuit (PLC) type 1-bit delay line interferometer for a differential quadrature phase-shift keying (DQPSK) demodulator is demonstrated by adopting wavelength insensitive couplers with narrow coupling waveguides and novel circuit arrangement suitable for integrated DQPSK receivers. The fabricated interferometer realizes a small chip size and practical properties in both entire C- and L-bands.
Keywords :
demodulators; differential phase shift keying; optical couplers; optical receivers; optical waveguides; quadrature phase shift keying; C-bands; DQPSK demodulator; L-bands; colorless planar lightwave circuit; compact planar lightwave circuit; delay line interferometer; differential quadrature phase-shift keying; integrated DQPSK receivers; narrow coupling waveguides; wavelength insensitive couplers; Couplers; Couplings; Demodulation; Optical films; Optical interferometry; Optical receivers; Optical waveguides; DQPSK demodulator; Delay line interferometer; optical waveguide; planar lightwave circuit;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2191277
