Abstract: Disclosed herein are embodiments of a broadband wavemeter system comprising: a laser source to generate an optical signal having one or more wavelengths; a tap to separate a portion of the optical signal from the laser source; a splitter to split an incoming optical signal from the tap into a plurality of outgoing optical signals; a plurality of wavemeters, each one in the plurality to receive one of the outgoing optical signals from the splitter, in which each wavemeter in the plurality of wavemeters comprises a Mach-Zehnder Interferometer (MZI), and each wavemeter has at least one of free spectral range (FSR) detuning and center wavelength detuning, and a control circuit to collate outputs from individual ones of the plurality of wavemeters to monitor, detect and control the laser source.

Abstract: Disclosed herein are embodiments of a waveguide structure, comprising: a deep rib waveguide on a slab and a plurality of shallow rib waveguides on the slab. The deep rib waveguide has a first etch-depth, the plurality of shallow rib waveguides has a second etch-depth, and the first etch-depth is greater than the second etch-depth.

Abstract: Thermally compensated waveguides are disclosed herein. According to one aspect, the present disclosure proposes new ways to combine negative TOC (NTOC) material layers within the waveguides. NTOC materials can be implemented in one or more of a cladding layer, a core rib/channel waveguide, a horizontally segmented waveguide, a vertically segmented waveguide, a sub-wavelength grating structure, and/or in various other waveguide structure implementations including arbitrary core or cladding shapes. The integration of NTOC materials improves the temperature dependence of the waveguide spectrum. The need for fast and efficient optical-based technologies is increasing as Internet data traffic growth rate is overtaking voice traffic, pushing the need for optical communications.