| 摘要 |
A tunable laser (100) for tuning a lasing mode based on light beams travelling through at least one block of channel waveguides (108) with at least two tunable combs, includes: a frequency selective optical multiplexer (112) comprising a first terminal (110) for receiving/transmitting light, at least one block of channel waveguides (108), each channel waveguide (108) having a reflectively coated first tail (101) and a second tail, and an optical coupling element (103) optically coupling the first terminal (110) with the second tails of the channel waveguides (108) of the at least one block of channel waveguides, each of the channel waveguides (108) having a different length; a gain element (105) generating a broad spectrum of light, the gain element coupling the first terminal (110) of the frequency selective optical multiplexer (112) with a reflective element (106); a phase element (104) coupled to the gain element (105), wherein the phase element (104) is configured to fine-tune the lasing mode and to offset a phase drift of the tunable laser; a plurality of optical tuners (102a, 102b), each one coupled to a respective plurality of branches of the at least one block of channel waveguides (108), wherein the plurality of optical tuners (102a, 102b) are configured to tune a lasing mode based on light beams travelling through the at least one block of channel waveguides (108). |
