An optical system can include an optical arrangement supported by an optical chassis. A flexure arrangement can support the optical chassis relative to a separate structure to maintain a calibrated distance between optical components of the optical arrangement.

An optical sensor comprises foreoptics configured to receive an image signal, an image optic operable to focus the image signal, at least one focal plane array (FPA) configured to detect the image signal, and a jitter stabilization system. The jitter stabilization system can comprise a transmitter configured to transmit a jitter source signal to the foreoptics and a position sensor configured to receive a jitter return signal. The position sensor can be positioned at a shared focus with the at least one FPA. The optical sensor further comprises a diffraction grating operable to reflect and diffract at least a portion of the jitter source signal. The jitter return signal received at the position sensor comprises at least a portion of the reflected and diffracted jitter source signal.

A multicore fiber is provided that includes a plurality of elliptical cores spaced apart from one another. Each of the plurality of elliptical cores has an elliptical shape. The multicore fiber also includes a cladding surrounding the plurality of elliptical cores.

An optical system can include an optical arrangement supported by an optical chassis. A flexure arrangement can support the optical chassis relative to a separate structure to maintain a calibrated distance between optical components of the optical arrangement.

An optical fiber made of silica glass includes a core having a maximum refractive index n1, a depressed portion surrounding the core and having an average refractive index n2, and cladding surrounding the depressed portion and having an average refractive index n3. In the optical fiber, n1>n3>n2. The optical fiber has a local maximum value of chromatic dispersion within a wavelength range of 1530 nm to 1610 nm, and the local maximum value is 2 ps/nm/km or greater and below 0 ps/nm/km.

Provided are an optical fiber that has a short zero-dispersion wavelength, has high nonlinearity, and can cause broadband supercontinuum light to be generated with high efficiency, and a light source device that can output broadband supercontinuum light by using the optical fiber. A light source device includes a seed light source that outputs light with a central wavelength 1000 nm or more and 1650 nm or less and an optical fiber that receives the light output from the seed light source, allows the light to propagate therethrough, causes broadband light with an expanded band to be generated in accordance with a nonlinear optical phenomenon while the light propagates therethrough, and outputs the broadband light. The optical fiber is composed of silica glass, has a zero-dispersion wavelength of 1290 nm to 1350 nm, and has an effective area of 14 m.sup.2 or smaller at a wavelength of 1550 nm.

An optical fiber made of silica glass includes a core having a maximum refractive index n1, a depressed portion surrounding the core and having an average refractive index n2, and cladding surrounding the depressed portion and having an average refractive index n3. In the optical fiber, n1>n3>n2. The optical fiber has a local maximum value of chromatic dispersion within a wavelength range of 1530 nm to 1610 nm, and the local maximum value is 2 ps/nm/km or greater and below 0 ps/nm/km. (86 words)

An optical sensor comprises foreoptics configured to receive an image signal, an image optic operable to focus the image signal, at least one focal plane array (FPA) configured to detect the image signal, and a jitter stabilization system. The jitter stabilization system can comprise a transmitter configured to transmit a jitter source signal to the foreoptics and a position sensor configured to receive a jitter return signal. The position sensor can be positioned at a shared focus with the at least one FPA. The optical sensor further comprises a diffraction grating operable to reflect and diffract at least a portion of the jitter source signal. The jitter return signal received at the position sensor comprises at least a portion of the reflected and diffracted jitter source signal.

The present invention generally relates to the field of fiber optics, and more particularly, to apparatuses, systems, and methods directed towards improving effective modal bandwidth within a fiber optic communication environment. In an embodiment, a multimode optical fiber in accordance with the present invention comprises a core and cladding material system where the refractive indices of the core and cladding are selected to modify the shape of the profile dispersion parameter, y, as a function of wavelength in such a way that the alpha parameter (-parameter), which defines the refractive index profile, produces negative relative group delays over a broad range of wavelengths. The new shape of the profile dispersion parameter departs from traditional fibers where the profile dispersion parameter monotonically decreases around the selected wavelength that maximizes the effective modal bandwidth (EMB).

The present invention generally relates to the field of fiber optics, and more particularly, to apparatuses, systems, and methods directed towards improving effective modal bandwidth within a fiber optic communication environment. In an embodiment, a multimode optical fiber in accordance with the present invention comprises a core and cladding material system where the refractive indices of the core and cladding are selected to modify the shape of the profile dispersion parameter, y, as a function of wavelength in such a way that the alpha parameter (a-parameter), which defines the refractive index profile, produces negative relative group delays over a broad range of wavelengths. The new shape of the profile dispersion parameter departs from traditional fibers where the profile dispersion parameter monotonically decreases around the selected wavelength that maximizes the effective modal bandwidth (EMB).