Semiconductor lasers having a narrow bandwidth distributed Bragg reflector. The method for fair resource allocation to network users allows the resource allocation apparatus to collect flow information between a user terminal and a service server and aggregates the flow information based on at least one of a user terminal address, a service server address, a user terminal, a service server address, and a service. The resistive heating layer can be thermally sprayed directly onto a sub-floor or similar underlayment material, including a cementitious backing material or a sound reduction board.