06304706 is referenced by 8 patents and cites 6 patents.

This planar lightwave circuit includes a buried layer formed in a region between at least two cores branching from a branching point to decrease in thickness as the spacing between the cores increases with an increase in distance from the branching point. The planar lightwave circuit is designed to suppress scattering of light signals at the branching point.

Title
Planar lightwave circuit
Application Number
9/390490
Publication Number
6304706 (B1)
Application Date
September 3, 1999
Publication Date
October 16, 2001
Inventor
Mikitaka Itoh
Ibaraki-ken
US
Akimasa Kaneko
Ibaraki-ken
US
Akio Sugita
Ibaraki-ken
US
Agent
Blakely Sokoloff Taylor & Zafman
US
Assignee
Nippon Telegraph and Telephone Corporation
US
IPC
G02B 6/10
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