Fiber optic sensors are typically used with expensive tunable lasers or optical spectrum analyzers for wavelength interrogation. We propose to replace the tunable laser by a broadband optical source incorporated with a novel thin linewidth acousto-optic tunable filter. It utilizes optical beam expanders constituted by photonic crystal rows of air holes in ${\mathrm{LiNbO}}_3$ waveguide. A new design is numerically studied for a short structure (with 32 photonic crystal rows) by a two-dimensional finite-difference time-domain method. Extrapolation of these results to larger structure sizes (about $1\mathrm{cm}$ ) demonstrates the possibility to develop compact interrogators with $0.4\mathrm{pm}$ wavelength resolution and $40\mathrm{nm}$ tunable range around $1550\mathrm{nm}$ .

© 2011 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

• Measurement of birefringence in integrated optical waveguides by use of a microwave-modulated optical wave (OL)
• Temperature-independent silicon waveguide optical filter (OL)
• Integrated acousto-optic polarization converter in a ZX-cut LiNbO₃ waveguide superlattice (OL)
• Thermally tunable lithium-niobate long-period waveguide grating filter fabricated by reactive ion etching (OL)
• Compact acousto-optic filter with beam expanders constituted by photonic crystal rows of airholes (OL)

Related Conference Papers

• Mode Conversion Losses in SOI Photonic Wire Based Racetrack Resonators
• The Novel Schemes and Materials for 10Gbps per Channel in Optical Interconnect
• The Novel Schemes and Materials for 10Gbps per Channel in Optical Interconnect
• Nanophotonic Waveguides by Self-assembly of Multiple-type Quantum Dots
• Non-Lithographic Fabrication of Polymer Waveguides and Grating Couplers