title: Novel directional coupled waveguide photodiode-concept and preliminary results.
abstract: A novel photodiode is presented using a directional coupler incorporated with a UTC style photodiode with 0.88 A/W responsivity and 35 dBm OIP3 at 25 mA. The device responsivity is characterized at various photocurrents up to 10 mA and the OIP3 is measured up to 25 mA and 10 GHz. Additionally, the device capacitance is measured and used to model the capacitance limited OIP3 of the device. The failure of the device was compared to a traditional waveguide photodiode showing burnout no longer occurs at the front of the device and demonstrated the potential of the new design to control the photocurrent density profile for a waveguide style photodiode.
authors: Global Defense Technology and Systems, Inc., 2200 Defense Highway, Suite 405, Crofton, MD 21114, USA. meredith.draa.ctr@nrl.navy.mil
authors: Meredith N
authors: MN
authors: Draa
authors: Jeffrey
authors: J
authors: Bloch
authors: Dingbo
authors: D
authors: Chen
authors: David C
authors: DC
authors: Scott
authors: Nong
authors: N
authors: Chen
authors: Steven Bo
authors: SB
authors: Chen
authors: Xucai
authors: X
authors: Yu
authors: William S
authors: WS
authors: Chang
authors: Paul K L
authors: PK
authors: Yu
mesh_terms: D025802:Electric Capacitance; D004553:Electric Conductivity; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008872:Microwaves; D055095:Optics and Photonics / Q000295:instrumentation*; D012666:Semiconductors