In this chapter, digital transceiver structure is reviewed. The concept of digital transceivers has been briefly introduced in Sec. 2.4. However, in this section, detailed design considerations and design topologies of burst-mode control, modulation, heat dissipation, housing, transmit-optical subassembly (TOSA), and receiver-optical sub-assembly (ROSA) blocks' inside structure, and wavelength locker are explained. A preliminary review of digital transceiver design approaches is given in this chapter. Burst mode is reviewed in Sec. 19.1, a glance on tunable wavelength transmitters is provided in Sec. 19.2, and design approaches for transceiver integration into small form packages are dealt with in Sec. 19.3.
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