We present a new flat-focal-field arrayed-waveguide grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective index difference between slab and lens region is obtained by introducing a thin silicon nitride (SiN) layer to a silicon oxynitride environment. Depending upon the SiN layer position, two different lens designs are implemented. As a proof of concept two 81-channel AWGs, one with and one without the lens, are designed, fabricated, and characterized for each lens design. The measurements show that the adjacent crosstalk at the peripheral channels is improved by 2 dB, an improvement which is predicted to become more pronounced for AWGs with higher number of output waveguides (e.g., $\sim 16\mathrm{dB}$ for 200 output waveguides). Only 0.4 dB of extra excess loss is introduced by the lens.

© 2012 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Design of binary subwavelength diffractive lenses by use of zeroth-order effective-medium theory (JOSAA)
• Planar glass waveguide ring resonators with gain (OE)
• Design of a compact static Fourier transform spectrometer in integrated optics based on a leaky loop structure (OL)
• Realization of the compact static Fourier transform spectrometer LLIFTS in glass integrated optics (OL)
• Sub-nm resolution cavity enhanced microspectrometer (OE)

Related Conference Papers

• The electric field switching in resonant tunneling diode electroabsorption modulator
• Silica-based 16x16 optical matrix switch module with integrated driving circuits
• Broadband Slow Light in a Photonic Crystal Line Defect Waveguide
• Observation of Wideband Slow Light in Chirped Photonic Crystal Waveguide Directional Coupler
• Cavity Enhanced On-Chip Spectrometer with Sub-nm Resolution