High optical coupling efficiency quasi-vertical taper for polymer waveguide devices

Quasi-Vertical tapers are designed to enable high coupling efficiency from a conventional single mode fiber into a single mode polymer rib waveguide. A triangular region fabricated under the single mode waveguide is adopted to adiabatically transform the fiber mode into the polymer rib waveguide mode. This structure works as an optical mode transformer. Because the trenches are deeper at the facets than at the active regions of the waveguide, the waveguide mode size in vertical direction becomes larger at the facets and can better match the input and output fiber mode. A coupling efficiency of 82.95% is achievable with a tip width of 1 μm.

[1]  Jurgen Michel,et al.  Silicon-based highly-efficient fiber-to-waveguide coupler for high index contrast systems , 2006 .

[2]  Anatol Khilo,et al.  Efficient planar single-mode fiber-to-chip coupler based on two-stage adiabatic evolution , 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.

[3]  T. Aalto,et al.  Low-loss converters between optical silicon waveguides of different sizes and types , 2006, IEEE Photonics Technology Letters.

[4]  Dim-Lee Kwong,et al.  Suspended optical fiber-to-waveguide mode size converter for silicon photonics. , 2010, Optics express.

[5]  Regis Orobtchouk,et al.  On Chip Optical Waveguide Interconnect: the Problem of the In/Out Coupling , 2006 .

[6]  Xiaohui Lin,et al.  Towards realizing high-throughput, roll-to-roll manufacturing of flexible electronic systems , 2014 .

[7]  Hon Ki Tsang,et al.  Tapered silicon waveguides for low insertion loss highly-efficient high-speed electronic variable optical attenuators , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[8]  Anatol Khilo,et al.  Efficient planar fiber-to-chip coupler based on two-stage adiabatic evolution. , 2010, Optics express.

[9]  C. Koos,et al.  Low-Loss Silicon Strip-to-Slot Mode Converters , 2013, IEEE Photonics Journal.

[10]  Ray T. Chen,et al.  Reconfigurable thermo-optic polymer switch based true-time-delay network utilizing imprinting and inkjet printing , 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

[11]  F. P. Payne,et al.  Silicon Based Waveguides , 2004 .

[12]  Ray T. Chen,et al.  Printable thermo-optic polymer switches utilizing imprinting and ink-jet printing. , 2013, Optics express.

[13]  Ray T. Chen,et al.  Integrated Photonic Electromagnetic Field Sensor Based on Broadband Bowtie Antenna Coupled Silicon Organic Hybrid Modulator , 2014, Journal of Lightwave Technology.

[14]  Xingyu Zhang,et al.  Wide optical spectrum range, subvolt, compact modulator based on an electro-optic polymer refilled silicon slot photonic crystal waveguide. , 2013, Optics letters.

[15]  Xingyu Zhang,et al.  Highly Linear Broadband Optical Modulator Based on Electro-Optic Polymer , 2012, IEEE Photonics Journal.

[16]  J. Doylend,et al.  Design and Simulation of an Integrated Fiber-to-Chip Coupler for Silicon-on-Insulator Waveguides , 2006, IEEE Journal of Selected Topics in Quantum Electronics.

[17]  R. Jones,et al.  Double-Stage Taper for Coupling Between SOI Waveguides and Single-Mode Fiber , 2008, Journal of Lightwave Technology.

[18]  Sailing He,et al.  Bilevel mode converter between a silicon nanowire waveguide and a larger waveguide , 2006 .

[19]  Ray T. Chen,et al.  Polymer-Based Hybrid-Integrated Photonic Devices for Silicon On-Chip Modulation and Board-Level Optical Interconnects , 2013, IEEE Journal of Selected Topics in Quantum Electronics.

[20]  Jiho Joo,et al.  A fiber-to-chip coupler based on Si/SiON cascaded tapers for Si photonic chips. , 2013, Optics express.

[21]  Timo Aalto,et al.  Fabrication and characterization of waveguide structures on SOI , 2003, Photonics Fabrication Europe.