Coupling loss occurs between a standard single-mode fiber and a silica waveguide when the difference between the refractive indices of the core and the cladding of the silica waveguide is high. We designed a Y-branch structure for use as a spot-size converter to reduce this coupling loss. The structure was tested with a three-dimensional beam-propagation method and was shown to exhibit a significantly reduced coupling loss, a low polarization-dependent loss, and a good tolerance of imprecision in fabrication. No additional fabrication steps are required for this proposed spot-size converter.

© 2004 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. 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

• Polarization characteristics of optical waveguides with separable symmetric refractive-index profiles (JOSAA)
• Method of achieving phase delay with wide optical bandwidth in multimode interference devices (OL)
• Subwavelength waveguide grating for mode conversion and light coupling in integrated optics (OE)
• A high-resolution silicon-on-insulator arrayed waveguide grating microspectrometer with sub-micrometer aperture waveguides (OE)
• Fresnel diffraction effects in Fourier-transform arrayed waveguide grating spectrometer (OE)

Related Conference Papers

• Characterization of a 90° Waveguide Bend Using Near-field Scanning Optical Microscopy
• Ultra-Wide Temperature Range (-30~70 oC) Operation of Athermal AWG Module Using Pure Aluminum Plate
• MZI Based 8-Channel Wideband WDM Filter Array with Low Loss Ripple and High Isolation Using Silica-Based PLC
• Low Loss (~1.4dB) 200GHz-16ch Athermal AWG Compact Module for Metro/Access Network
• Novel Design Method for Generalized Lattice Filters