| 摘要 |
PURPOSE: A 10G PON(Passive Optical Network) light transceiving sub assembly including an OTDR(Optical Time Domain Reflectometer) function is provided to be manufactured as an integral type by adding an OTDR to a 10G PON optical module. CONSTITUTION: A light receiving unit includes functions of an OTDR receiving unit. A first transmitting unit(30) transmits an optical signal of 1577nm wavelengths. An OTDR transmitting unit(35) transmits an optical signal of 1310nm wavelengths. A first filter penetrates light of 1490nm to 1577nm. The second filter reflects light of 1270nm to 1310nm. [Reference numerals] (30) 1577nm first transmitting unit; (31) Isolator; (32) 1490-1577nm penetrating and 1270-1310nm reflecting filter; (33) 1490-1577nm penetrating filter with a function of 1270-1310nm 90% reflecting and 10% penetrating splitter (referring to drawing 4); (34) Glass capillary; (35) OTDR 1310nm receiving unit; (36) Glass prism; (37) 1270-1310nm receiving unit(including an OTDR receiving unit) |
