| 摘要 |
The present invention relates to the field of communications. An adjustable filter (10), adjustable optical assembly and passive optical network (PON) system satisfying both the requirements of the bandwidth and isolation of the adjustable filter in the field of optical fiber communications. The adjustable filter (10) comprises a first Ethernet dragon filter (11), a second Ethernet dragon filter (12) and a temperature controller (13) disposed on the surface of the first Ethernet dragon filter (11) or the second Ethernet dragon filter (12); both the first Ethernet dragon filter (11) and the second Ethernet dragon filter (12) are Ethernet dragon filters sensitive to temperature change; one end of the first Ethernet dragon filter (11) is connected to one end of the second Ethernet dragon filter (12) via an adhesive (14), and the other end of the first Ethernet dragon filter (11) is connected to the other end of the second Ethernet dragon filter (12) via an adhesive (15); and the thickness of the adhesive (14) for connecting one end of the first Ethernet dragon filter (11) to one end of the second Ethernet dragon filter (12) is greater than the thickness of the adhesive (15) for connecting the other end of the first Ethernet dragon filter (11) to the other end of the second Ethernet dragon filter (12). |
