Light emitting module and multi-channel light emitting module
AssigneeSumitomo Electric Industries, Ltd.
InventorsTomoya Saeki, Munetaka Kurokawa
Life of this patent
Estimating the term…
Abstract
The present transmitter optical module provides an LD 11, a first lens 12 with a focal point aligned with an optical output point of the LD 11, a second lens 14 that generates an optical output of the first lens 12 as a concentrated optical signal, and a third lens 4 that provides an optical output of the second lens 14 in an optical fiber 5. The second lens 14 is set at a position offset toward the third lens 4 from a position at which the second lens 14 outputs a collimated optical signal. The third lens 4 concentrates an optical output thereof within the optical fiber 5.
Claims4
A transmitter optical module, comprising:
- a transmitting optical device;
- a first lens having one of focal point aligned with an optical output point of the transmitting optical device;
- a second lens that outputs an optical output of the first ens as a concentrated optical beam;
- and
- a third lens that couples the concentrated optical signal with an optical fiber;
- wherein the second lens is set at a position closer to the third lens from another position at which the second lens outputs a collimated optical beam, and
- wherein the third lens concentrates the concentrated optical signal within the optical fiber.
A multi-channel transmitter optical module that provides a plurality of signal lanes each including a light-emitting element, a first lens, and a second lens, comprising:
- a third lens that couples optical signals with an optical fiber, the optical signal being output from the second lanes in the respective lanes and multiplexed to each other,
- wherein, in the respective signal lanes, the first lens has one of focal point aligned with an optical output point of the light-emitting element, and the second lens is set in a position at which the second lens converts an optical output of the first lens into a concentrated beam, and
- wherein the concentrated beam output from the second lens is concentrated within the optical fiber.
Dependencies are inferred from the claim text.