Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Athermalization and pressure desensitization of diffraction grating based spectrometer devices










Image Number 3 for United States Patent #6570652.

A device for monitoring wavelength division multiplexed optical signals for use in an optical network and in an optical performance monitor. A device has a structure for supporting components of the device. An optical component is supported at one end of the structure for transmitting the optical signals. A diffraction grating is supported at an opposing end of the structure for diffracting the optical signals from the optical component. An optical sensor is supported in relation to the diffraction grating by the structure for monitoring the optical signals. A telephoto lens assembly is supported by the structure and disposed between the optical sensor and the diffraction grating, the lens assembly having a focal length for focusing the optical signals in relation to the optical sensor. Thermal effects on the structure are balanced against thermal effects on the lens assembly. A prism is disposed between the lens assembly and diffraction grating. The prism is configured to anamorphically compress the diffracted optical signals. Thermal effects on the diffraction grating are balanced against thermal effects on the lens and prism.








 
 
  Recently Added Patents
System and method for displaying relationships between electronically stored information to provide classification suggestions via inclusion
Nonvolatile memory device
Dual gate electronic memory cell and device with dual gate electronic memory cells
Beverage container lid
Methods circuits apparatuses and systems for facilitating access to online content
Backside structure and methods for BSI image sensors
Cylindrical LED fixture
  Randomly Featured Patents
Earring kit
Transmission brake disengagement apparatus for improving the starting consistency of a drag race car
Escape slide
Rotary valve
Low-mycotoxin coffee cherry products
Recursive low pass digital filter
Laterally extendable bumper system
Sheet supplying device and image forming apparatus incorporating same
Function expansion device for a portable electronic device
Vehicle side section structure