A method for suppress F-P lasing of a 1550nm SLD device using a multi-period surface DFB optical feedback system is disclose

• Main Authors: QIAO ZHONGLIANG, LI HUI, WEI ZHIPENG, SUN CHUNMING, BO BAOXUE, WANG XIANTAO, MA XIAOHUI, ZHU ZIXIANG, GAO XIN, ZHANG JING
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2019
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

A multi-period surface DFB optical feedback system is used to suppress the F The method of P lasing belongs to the field of structure design and fabrication technology of optoelectronic devices. A disadvantage of conventional superluminescent diodes is that they destroy Fabry- Light oscillation between front and rear cavity surfaces of Fabry-Perot (F-P) type SLD can restrain the occurrence of light lasing. This kind of SLD has poor luminescence stability and can produce lasing when the device is aged. The invention not only inhibits F- P oscillation, but suppresses F- P oscillation, a completely different optical oscillation system is introduced. The optical oscillation system competes for the high-level carriers to clamp the F-P gain, annihilation FP lasing The purpose of P lasing, Whileensuring that the optical oscillation system has the advantages of strong mode competition, beneficial to increase the power of the device, beneficial to the expansion of the spectrum width and the like, and that the optical