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Journal Article
InP-Based Polarization Insensitive Planar Waveguide Concave Grating Demultiplexer with Flattened Spectral Response
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- Issue Date
- 2009-04
- Citation
- ETRI Journal, v.31, no.2, pp.228-230
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Project Code
- 08MB2300, Development of Optical Switches for ROADM, Baek Yongsoon
- Abstract
- InP-based planar waveguide 48-channel concave grating demultiplexers with a channel spacing of 0.8 nm (100 GHz) are described and demonstrated. Polarization insensitivity and flattened spectral response are successfully achieved by the introduction of a polarization compensator and a two-focus grating, respectively. The fabricated device shows a polarization-dependent wavelength shift of less than 20 pm and a -3 dB spectral width of about 0.55 nm (68.75 GHz) over all channels.