Tung C.-TChang S.-WCHAO-HSIN WU2021-09-022021-09-022019https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084601980&partnerID=40&md5=77d68cb9c2c93930d84fcdafb4f5151ahttps://scholars.lib.ntu.edu.tw/handle/123456789/580582The transistor laser (TL) is a device with features of both the heterojunction bipolar transistor and diode laser (DL) [1]. Its optical output can be modulated by the base-collector junction voltage due to the Franz-Keldysh (FK) effect [2-4]. By varying the BC voltage, both the absorption in BC junction and gain in active region are changed. These induce a frequency chirp different from those of DLs [5]. The chirp is neither positive nor negative, which induces the pulse compression in both types of fibers with normal and anomalous dispersions. ? 2019 IEEEHeterojunctions; Active regions; Anomalous dispersion; Base-collector junctions; BC junction; Fiber dispersion; Frequency chirp; Optical output; Transistor lasers; Heterojunction bipolar transistorsconference paper2-s2.0-85084601980