Novel N x N Integrated Channel Waveguide Optical Crossbars for Large Scale High Speed Non-Blocking Data Switching
Abstract
Physical Optics Corporation proposed a new structure for an optical crossbar based on a multi-wavelength ring resonator tuning/switching. To demonstrate its feasibility, in Phase I, we designed, analyzed, and demonstrated a basic ring resonator tuning/switching element for the crossbar. Two approaches for ring resonator tuning were identified: fiber-based ring resonator and waveguide-based ring resonator. For simplicity of the Phase I concept demonstration, we demonstrated a fiber ring resonator. At HeNe laser wavelengths of 632.8 and 611.9 nm, the fiber resonator demonstrated the desired wavelength selective switching operation. The finesse of the present unoptimized device was measured at about 19 under zero tap coupling, with a potential of exceeding 100. The device provided over 36% throughput with a potential for throughput efficiency of over 80%. The crosstalk was measured at -8 dB with a potential of better than -33 dB. Optimization is possible by reducing the coupler loss. Waveguide fabrication and fiber/waveguide pigtailing experiments were also conducted in Phase I to demonstrate pigtailing capability for crossbar applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1993
- Accession Number
- ADA272065
Entities
People
- Michael Yu Wang