LASER DIODE 1 550 nm InGaAsP MQW-DFB LASER DIODE FOR 1.25 Gb/s FTTH P2P AND OC-48 IR-2激光二极管1 550纳米的InGaAsP MQW - DFB激光二极管1.25 Gb / s的FTTH P2P和OC- 48 IR- 2