Hitta 0.2 m --- 3.30 - 50 1- A semi conductor Laser Diode with voltage of 1.5 V is producing mode lightwaves with the operation wavelength of 1550 nm, as shown in Figure 1. (25 pts. each) a) Please explain the operating principles of the laser diode by using your knowledge learning about slab approach. b) Can the TM, TE and Hybrid modes electromagnetic waves propagate inside core of the LD, please explain briefly? 50 2- The specifications of a fiber optic communication system are given as follows: p. Gaas ng 3.28 P. Balas Active Layer n Gatlas na = 3.28 n. Gaas Source: LED . Maximum normalized attenuation of Fiber Operating Wavelength: 1550 nm Cable: 0.3 dB/km Semiconductor Laser Diode Transmitted Power into the Fiber: -20 dBm Length of Fiber Cable: 35 km. Structure Receiver Sensitivity: -70 dBm Microbending Losses: 0.04 dB Figure 1 Laser Diode Dynamic Range: 25 dB Number of microbending: 5 Splice Loss (mechanical): 0.5 dB Macrobending Losses: 0.04 dB Number of splices: 30 Number of macrobending: 10 Connector Loss: 0.8 dB Aging Loss: 2 dB Number of connectors: 2 Compute the received signal level at the output of the fiber cable, is the dynamic range satisfied? . . . . . . . . Hitta 0.2 m --- 3.30 - 50 1- A semi conductor Laser Diode with voltage of 1.5 V is producing mode lightwaves with the operation wavelength of 1550 nm, as shown in Figure 1. (25 pts. each) a) Please explain the operating principles of the laser diode by using your knowledge learning about slab approach. b) Can the TM, TE and Hybrid modes electromagnetic waves propagate inside core of the LD, please explain briefly? 50 2- The specifications of a fiber optic communication system are given as follows: p. Gaas ng 3.28 P. Balas Active Layer n Gatlas na = 3.28 n. Gaas Source: LED . Maximum normalized attenuation of Fiber Operating Wavelength: 1550 nm Cable: 0.3 dB/km Semiconductor Laser Diode Transmitted Power into the Fiber: -20 dBm Length of Fiber Cable: 35 km. Structure Receiver Sensitivity: -70 dBm Microbending Losses: 0.04 dB Figure 1 Laser Diode Dynamic Range: 25 dB Number of microbending: 5 Splice Loss (mechanical): 0.5 dB Macrobending Losses: 0.04 dB Number of splices: 30 Number of macrobending: 10 Connector Loss: 0.8 dB Aging Loss: 2 dB Number of connectors: 2 Compute the received signal level at the output of the fiber cable, is the dynamic range satisfied