The information transfer through the fibers, which converts the electronic signals into light and employs the light emitting and the light source which enables the information transfer, is known as optical communications. Noise reduction is needed for information transfer. More noise is transferred in the optical fiber, which is the main problem with the information transfer. Then the communication multiplies the bandwidth, and the optical communication can be enabled. The high modulation method and quantum cryptographic system manage the modulation method to reduce noise from information transmission. The guided waves for many communication purposes, multi-rate communication, and non-moderate communication can be used in this research. The application of the quantum cryptographic system and the modulation for analog signal processing keep the noise reduction, bandwidth, and optical communication can be improved by up to 97% of noise can be released in the fiber optic for the mortification of the communication system. The noise reduction can be made with optical communication. Up to 80% of noise can be removed in the modulation and the quantum cryptographic. Automatic improvement of the high bit rate communication using the quantum cryptographic and the system to reduce the multiplication and bandwidth using the quantum cryptographic system.