Title :
Square ring laser diode with MMI coupler cavity
Author :
Kim, H.S. ; Kwon, Y.S. ; Hong, S.
Author_Institution :
Opto-electron. Res. Center, Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
fDate :
5/1/1997 12:00:00 AM
Abstract :
A square ring laser diode is designed and fabricated in which a multimode interference 3-dB coupler operates as an output coupler and a ring resonator simultaneously. This merged structure allows a shorter cavity length and a lower loss in the output branching. Lasing in the ring cavity is confirmed and the spectra are also measured.
Keywords :
laser cavity resonators; laser modes; light interference; optical couplers; optical losses; quantum well lasers; ring lasers; GaAs-AlGaAs; GaAs-AlGaAs three quantum well separate confinement heterostructure; MMI coupler cavity; lasing; lower loss; multimode interference 3-dB coupler; output branching; output coupler; ring cavity; ring resonator; shorter cavity length; spectra; square ring laser diode; Coupling circuits; Diode lasers; Laser feedback; Laser modes; Mirrors; Optical coupling; Optical waveguides; Ring lasers; Semiconductor lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
