Filling the frequency gaps of a planar optical spectrum analyzer using a 2.5-GHz-spaced arrayed-waveguide grating in the C and L bands

2006 ◽  
Vol 24 (7) ◽  
pp. 2495-2499
Author(s):  
K. Takada ◽  
S. Satoh
Keyword(s):  
Optical Spectrum ◽  
Spectrum Analyzer ◽  
Arrayed Waveguide Grating ◽  
Optical Spectrum Analyzer ◽  
Waveguide Grating ◽  
Arrayed Waveguide

scholarly journals Optical spectrum control circuit using an arrayed-waveguide grating and tunable phase shifters

2011 ◽  
Vol 8 (6) ◽  
pp. 391-396 ◽  
Author(s):  
Koichi Kato ◽  
Yuichiro Ikuma ◽  
Hiroshi Takahashi ◽  
Takayuki Mizuno ◽  
Hiroyuki Tsuda
Keyword(s):  
Optical Spectrum ◽  
Phase Shifters ◽  
Control Circuit ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Spectrum Control ◽  
Arrayed Waveguide

scholarly journals Optimal Design of an Ultrasmall SOI-Based 1 × 8 Flat-Top AWG by Using an MMI

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Hongqiang Li ◽  
Yaoting Bai ◽  
Xiaye Dong ◽  
Enbang Li ◽  
Yang Li ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Spectral Response ◽  
Beam Propagation Method ◽  
Silicon On Insulator ◽  
Optimized Design ◽  
Arrayed Waveguide Grating ◽  
Channel Spacing ◽  
Waveguide Grating ◽  
Passband Width ◽  
Arrayed Waveguide

Four methods based on a multimode interference (MMI) structure are optimally designed to flatten the spectral response of silicon-on-insulator- (SOI-) based arrayed-waveguide grating (AWG) applied in a demodulation integration microsystem. In the design for each method, SOI is selected as the material, the beam propagation method is used, and the performances (including the 3 dB passband width, the crosstalk, and the insertion loss) of the flat-top AWG are studied. Moreover, the output spectrum responses of AWGs with or without a flattened structure are compared. The results show that low insertion loss, crosstalk, and a flat and efficient spectral response are simultaneously achieved for each kind of structure. By comparing the four designs, the design that combines a tapered MMI with tapered input/output waveguides, which has not been previously reported, was shown to yield better results than others. The optimized design reduced crosstalk to approximately −21.9 dB and had an insertion loss of −4.36 dB and a 3 dB passband width, that is, approximately 65% of the channel spacing.

A Wavelength Interleaved DWDM ROF System with 60GHz Optical OFDM Signal

2011 ◽  
Vol 130-134 ◽  
pp. 2245-2248
Author(s):  
Yong Hong Ma ◽  
Chong Xiang Zhang ◽  
Pan Zhang
Keyword(s):  
High Speed ◽  
Radio Over Fiber ◽  
Experimental Results ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Access System ◽  
Ofdm Signal ◽  
The Future ◽  
Optical Ofdm ◽  
Arrayed Waveguide

we demonstrate a wavelength interleaved DWDM Radio-over-Fiber (ROF) system for providing 1-Gb/s OFDM signal in downlink and 1-Gb/s OOK data in uplink simultaneously. In this scheme, we use only one arrayed waveguide grating device at the remote node to realize both the de-multiplexing and multiplexing functions. The experimental results demonstrate that this scheme is feasible to the future broadband high-speed OFDM-ROF access system.

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